An AAR (Association of American Railroads) reporting mark is two to four letters
that uniquely identifies the owner of a piece of railroad rolling stock (usually
freight cars). The
reporting mark is generally derived from the assigned company's initials. All
railcars in interchange service must be labeled with a reporting mark. A single
railroad may have numerous reporting marks due to a history of mergers and
acquisitions.
| AA | Ann Arbor Railroad |
| AALX | Advanced Aromatics LP |
| AAMX | Arrendadora de Carros de Ferrocarril SA |
| AAR | Association of American Railroads |
| AATX | Ampacet Corporation |
| AB | Akron Barberton Cluster Railway Company |
| ABB | Akron and Barberton Belt Railroad Company |
| ABBX | Abbott Labs |
| ABIX | Anheuser-Busch Incorporated |
| ABL | Alameda Belt Line |
| ABOX | TTX Company |
| ABR | Athens Lines LLC |
| ABRX | AB Rail Investments Incorporated |
| ABWX | Asea Brown Boveri Incorporated |
| AC | Canadian National Railway (Algoma Central Railway) |
| ACAX | Honeywell International Incorporated |
| ACBL | American Commercial Barge Lines |
| ACCX | Consolidation Coal Company |
| ACDX | Honeywell International Incorporated |
| ACEX | Ace Cogeneration Company |
| ACFX | General Electric Rail Services Corporation |
| ACGX | Suburban Propane LP |
| ACIS | Canadian National Railway (Algoma Central Railway) |
| ACIX | Great Lakes Chemical Corporation |
| ACJR | Ashtabula Carson Jefferson Railroad Company |
| ACJU | American Coastal Lines Joint Venture Incorporated |
| ACL | CSX Transportation Incorporated |
| ACLU | Atlantic Container Line Limited |
| ACLX | American Car Line Company |
| ACMX | Voith Hydro |
| ACNU | AKZO Chemie B V |
| ACOU | Associated Octel Company Limited |
| ACPX | BP Products North America Incorporated |
| ACPZ | American Concrete Products Company |
| ACRX | American Chrome and Chemicals Incorporated |
| ACSU | Atlantic Cargo Services AB |
| ACSX | Honeywell International Incorporated |
| ACSZ | American Carrier Equipment |
| ACTU | Associated Container Transport (Australia) Limited |
| ACTX | Honeywell International Incorporated |
| ACUU | Acugreen Limited |
| ACWR | Aberdeen Carolina and Western Railway |
| ACWZ | Union Pacific Railroad Company |
| ACXU | Atlantic Cargo Services AB |
| ACXX | Anderson Columbia Company Incorporated |
| ACY | Norfolk Southern Railway Company |
| ACZX | A C Railroad Service Company |
| ADBF | Adrian and Blissfield Rail Road Company |
| ADCU | Flexi-Van Leasing Incorporated |
| ADKU | AGA A/S |
| ADMX | ADM Transportation Company |
| ADN | Arkansas Louisiana and Mississippi Railroad Company |
| ADRX | Addeleston Recycling Corporation |
| ADSX | Andrew Merrilees Limited |
| AEC | Atlantic and East Carolina Railway Company |
| AECX | Associated Electric Cooperative Incorporated |
| AEFR | Aurora Elgin and Fox River Electric |
| AEIX | Alan Eslisk |
| AEIZ | Farrell Lines Incorporated |
| AEPU | American Lines Incorporated |
| AEPX | American Electric Power Service |
| AERC | Albany and Eastern Railroad Company |
| AESX | General Electric Rail Services Corporation |
| AEVX | AKZO Coatings Incorporated |
| AEX | The Andersons |
| AF | Alabama and Florida Railway Company |
| AFCU | Afram Lines Incorporated |
| AFCX | Atel Capital Equipment Fund |
| AFCZ | Afram Lines Limited |
| AFIU | ABS Industrial Verification Incorporated |
| AFIZ | Agmark Foods |
| AFLR | Alabama and Florida Railroad Incorporated |
| AFPX | Honeywell International Incorporated |
| AFRX | AF Railway Industries Incorporated |
| AFSX | Astoria LLC |
| AG | Galveston Railroad LP |
| AGCR | Alamo Gulf Coast Railroad Company |
| AGCX | Procor Limited |
| AGEX | Nova Chemicals Limited |
| AGHX | Agrium US Incorporated |
| AGIX | AGRI Industries |
| AGLF | Knoxville and Holston River Railroad Company |
| AGLX | Andrews Petroleum Incorporated |
| AGMX | Terra Nitrogen Limited Partnership |
| AGPX | Ag Processing Incorporated |
| AGR | Alabama and Gulf Coast Railway LLC |
| AGRD | A and G Railroad LLC |
| AGRX | Agrifos LLC |
| AGS | Alabama Great Southern Railroad Company |
| AGYX | Centrex Construction Products Inc (American Gypsum Company) |
| AHCX | Arcadian Corporation |
| AHMX | Altos Homos de Mexico SA de CV |
| AHW | Fox Valley and Western Limited |
| AHWZ | Fox Valley and Western Limited |
| AIDU | Albermarle Corporation |
| AIEU | Aviation Import Export Incorporated |
| AIIZ | III Transportation |
| AINX | TTX Company - Acorn Division |
| AIPX | Atlas Iron Processors Incorporated |
| AITU | Western Intermodal |
| AJCU | Australia Japan Container Line |
| AJPX | IMC Chemicals |
| AKDN | Acadiana Railway Company |
| AKFX | AKF Corporation |
| AKLU | K Line |
| AKMD | Arkansas Midland Railroad Company |
| AKMX | Helm Financial Corporation |
| AKZX | AKZO Nobel Chemicals Incorporated |
| AL | Almanor Railroad Company |
| ALAB | Alabama Railroad Company |
| ALAX | Equistar Chemicals LP |
| ALCX | Alcan Smelters and Chemicals Limited |
| ALEX | AGRI Industries |
| ALGX | Amsterdam Leasing |
| ALLX | Alliance Machine Company |
| ALLZ | Alliance Shippers Incorporated |
| ALM | Arkansas Louisiana and Mississippi Railroad Company |
| ALMX | Trinity Rail Management Incorporated |
| ALNX | Alberta Government |
| ALPX | Alberta Government |
| ALQS | Aliquippa and Southern Railroad Company |
| ALRX | A and R Leasing LLP |
| ALS | Alton and Southern Railway Company |
| ALSX | Albis Canada Incorporated |
| ALTU | VTG Vereinigte Tanklage U Transportmittel GMBH |
| ALTX | Southern Illinois Railcar Incorporated |
| ALUX | Alumax of South Carolina Incorporated |
| ALY | Allegheny and Eastern Railroad Incorporated |
| AM | Arkansas and Missouri Railroad Company |
| AMAX | AMAX Coal Company |
| AMBU | Amber Line Incorporated |
| AMBX | American Boiler Works Incorporated |
| AMC | Arkansas Louisiana and Mississippi Railroad Company |
| AMCX | BP Amoco Chemical Company Chemical Division |
| AMCZ | Interbulk Incorporated |
| AMEX | Allied Entreprises |
| AMFU | Amphibious Container Leasing Limited |
| AMGX | AMG Resources Corporation |
| AMHR | Landisville Railroad Incorporated |
| AMIU | American Marine Industries |
| AMIX | Railcar Leasing Specialists Incorporated |
| AMIZ | American Marine Industries |
| AMLX | American Railcar Company |
| AMMU | Hyundai |
| AMMX | Kentucky-Tennessee Clay Company |
| AMNX | American Railcar Leasing Partners |
| AMOX | BP Products North America Incorporated |
| AMOZ | American Oil Company |
| AMPX | General Electric Rail Services Corporation |
| AMRU | Alaska Marine Lines Incorporated |
| AMRX | Consolidated Oil and Transportation Company Incorporated |
| AMRZ | American Chassis Leasing Incorporated |
| AMSX | AllTrans Management Services Corp |
| AMTK | National Railroad Passenger Corporation (AMTRAK) |
| AMTZ | Amtrak (National Railroad Passenger Corporation) |
| AMXU | Americas Marine Express Incorporated |
| AN | AN Railway LLC |
| ANAU | Alliance Navigation Line Incorporated |
| ANAX | General Electric Rail Services Corporation |
| ANCX | Norit Americas Incorporated |
| ANDX | Andesite Rock Company |
| ANIX | Associacion National de la Industria Quimca A.C. |
| ANKX | A and K Railroad Materials Incorporated |
| ANR | Angelina and Neches River Railroad |
| ANSX | Ansco Investment Company |
| ANY | Athabasca Northern Railway Limited (Cando) |
| AOCU | Associated Octel |
| AOCX | Aluminum Company of America |
| AOEX | American Orient Express Railway Company LLC |
| AOIX | Marathon Ashland Petroleum Company |
| AOK | Arkansas-Oklahoma Railroad Incorporated |
| AOR | The Aliquippa and Ohio River Railroad Company |
| AOUX | Alberta and Orient Glycol Company Limited |
| APA | Apache Railway Company |
| APAX | Cimentos Apasco SA de CV |
| APCU | American President Lines Limited |
| APCX | Allied Lime Company |
| APD | Albany Port District |
| APEX | Apex Tank Car Line |
| APHX | Air Products Polymers LP |
| APIX | The Commonwealth Plan Incorporated |
| APLU | American President Lines Limited |
| APLX | APL Land Transport Services Incorporated |
| APLZ | American President Lines Limited |
| APMU | Maersk Lines |
| APMX | Air Products Manufacturing Company |
| APMZ | Maersk Equipment Service Company |
| APNC | Appanoose County Community Railroad |
| APOX | Alabama Power Company |
| APRX | Air Products and Chemicals Incorporated |
| APSX | Arizona Public Service Company |
| APTX | Air Products and Chemicals Incorporated |
| APWX | Appalachian Power Company |
| APXX | Alberta Prairie Rail Excursions |
| AQCX | Aqua-Chem Incorporated Celaver Brooks Division |
| AR | Aberdeen and Rockfish Railroad Company |
| ARA | Arcade and Attica Railroad Corporation |
| ARC | Alexander Railroad Company |
| ARCX | Arizona Rail Car Incorporated |
| ARDP | Union Pacific Railroad Company |
| ARDU | CATU Containers SA |
| ARE | A and R Line Incorporated |
| AREX | Aeropres Corporation |
| ARGX | Associated Railcar Incorporated |
| ARHU | CATU Containers SA |
| ARHX | Arch Mineral Corporation |
| ARIX | General Electric Rail Services Corporation |
| ARJX | Arch Chemicals |
| ARMH | Union Pacific Railroad Company |
| ARMN | Union Pacific Railroad Company |
| ARMX | American Rail and Marine Corporation |
| ARMZ | Armasal Line |
| ARN | Alberta RailNet Incorporated |
| AROX | General American Transportation Corporation |
| ARPX | BP Products North America Incorporated |
| ARR | Alaska Railroad Corporation |
| ARRX | Anthracite Railroads Historical Society Incorporated |
| ARSX | Sunoco Incorporated (R and M) |
| ART | American Refrigerator Transit Company |
| ARTU | CATU Containers SA |
| ARW | Arkansas Western Railway Company |
| ARWX | Alabama River Woodlands Incorporated |
| ARZC | Arizona and California Railroad Company |
| ASAB | Bay Line Railroad LLC |
| ASCX | Armco Steel Company LP |
| ASGX | Ash Grove Cement Company |
| ASHU | Maritainer France SA |
| ASHX | American Soda LLP |
| ASR | Allegheny Southern Railroad Incorporated |
| ASRX | Domino Sugar Company |
| ASRY | Ashland Railway Incorporated |
| ASRZ | Agri/Share Cooperative |
| ASTX | Asarco Incorporated |
| ATAX | Arizona Transit Assembly |
| ATCX | Southern Illinois Railcar Incorporated |
| ATEX | Asplundh Tree Expert Company Railroad Division |
| ATGU | Burlington Northern and Santa Fe Railway Company |
| ATGX | ATEL Leasing Corporation |
| ATIU | Societe Auxillaire De Transport Et D'Industries |
| ATIX | Alstom Transportation Incorporated |
| ATLT | AT and L Railroad Company |
| ATLU | American Marine Industries |
| ATLX | Atlas Machine and Iron Works Incorporated |
| ATLZ | American Marine Industries |
| ATMX | US Department of Energy Albuquerque Operations Office |
| ATOU | Atochem |
| ATSF | Burlington Northern and Santa Fe Railway Company |
| ATTX | TTX Company |
| ATW | Atlantic and Western Railway |
| AUBX | US Plastic Lumber Limited |
| AUG | Augusta Railroad Corporation |
| AVL | Aroostook Valley Railroad Company |
| AVLU | Allied Van Lines |
| AVR | Allegheny Valley Railroad Company |
| AWCX | Airco Welding Products |
| AWDX | Atlantic of New York Incorporated |
| AWIX | Albright and Wilson Americas Incorporated |
| AWP | CSX Transportation Incorporated |
| AWW | Algers Winslow and Western Railway |
| AWXX | East Carbon Development Company |
| AWZZ | McCloud Railway Company |
| AXCU | Ace Transportation Company |
| AXXZ | Agricultural Express of America |
| AZCR | Arizona Central Railroad Incorporated |
| AZCX | Azcon Corporation |
| AZER | Arizona Eastern Railway Company |
| AZEX | Arizona Electric Power Cooperative Incorporated |
| AZMX | Arizona Railway Museum |
| AZXX | Arizona Chemical Company |
| BADX | Baden Investment Company |
| BAEX | The Andersons |
| BALX | Bayer Corporation |
| BANU | Bank Winter and Co Aktiengesellschaft |
| BAPX | Bay Area Piggyback Incorporated |
| BAR | Bangor and Aroostook Railroad Company now MMA |
| BARU | Barons Leasing Corporation |
| BARZ | Bangor and Aroostook Railroad Company now MMA |
| BASX | Bay State Milling Company |
| BAWX | Babcock and Wilcox Company |
| BAYL | Bay Line Railroad LLC |
| BAYU | Mobay Chemical Corporation |
| BAYX | Bayer Corporation |
| BB | Buckingham Branch Railroad Company |
| BBCX | ABB Power Generation Inc |
| BBRX | Bombardier Incorporated Transportation Equipment Group |
| BBSZ | Barbar Steamship Lines Inc |
| BBTU | Bress Bulk International Bulk Transport and Consulting |
| BCAX | Blue Circle Incorporated |
| BCCX | Border Chemical Company Limited |
| BCDX | Borden Chemical Incorporated |
| BCGX | Bay Cities Gas Corporation |
| BCH | Southern Railway of British Columbia Limited |
| BCIT | BC Rail Limited |
| BCIU | Bay Cities Leasing Company |
| BCIX | Blue Circle Incorporated |
| BCJU | Bay Cities Leasing Company |
| BCLR | Bay Colony Railroad Corporation |
| BCLU | Bibby Bros Company |
| BCMX | Bullet Concrete Materials Company |
| BCNE | Canadian National Railway |
| BCOL | BC Rail Limited |
| BCRX | General Electric Rail Services Corporation |
| BCRY | Barrie-Collingwood Railway (Cando) |
| BCTZ | Boise Cascade Corporation |
| BCVX | West Coast Express |
| BCWX | Union Tank Car Company |
| BCYU | Bay Cities Leasing Company (Union Pacific) |
| BDCX | Anchor Glass Container |
| BDLX | BDL Company |
| BDMX | Blue Diamond Mining Incorporated |
| BDNX | Baroid Drilling Fluids Incorporated |
| BDRV | Belvidere and Delaware River Railway Company Incorporated |
| BDTL | Ballard Terminal Railroad Company |
| BDW | Bighorn Divide and Wyoming Railroad Incorporated |
| BECX | FMC Corporation |
| BEEM | Beech Mountain Railroad Corporation |
| BENX | Investors Property Service |
| BFCX | Berwick Freight Car Company |
| BFGX | Oxy Vinyls LP |
| BFHU | Bailee Freight Services Limited |
| BFIX | Bethlehem Steel Corporations |
| BFRX | Bakery Trading Company |
| BFSU | Bailee Freight Services Limited |
| BGEX | General American Marks Company |
| BGFX | Barnabas Group Foundation |
| BGKU | Schering AG |
| BGSX | Strata Corporation |
| BH | B and H Rail Corporation |
| BHCU | Bridgehead Container Service |
| BHP | BHP Nevada Railroad Company |
| BHTX | Bernhart Crane and Rigging Company |
| BHWY | Boot Hill and Western Railway Company LLC |
| BIAX | Ocala Recycling Recycling |
| BIDU | Universal Bulk-Handling Limited |
| BIGX | Air Liquide America Corporation |
| BIRR | Bellingham International Railroad LLC |
| BISX | Brandenburg Industrial Service Co |
| BITY | Penn Eastern Rail Lines Incorporated |
| BJGX | BJ Gas Supply Incorporated |
| BJHX | BJ Titan Services Company |
| BJOX | Citicorp Railmark Incorporated |
| BJRY | Burlington Junction Railway |
| BKLU | Bank Line Limited |
| BKRR | Batten Kill Railroad Company Incorporated |
| BKRU | Baker Tanks |
| BKTY | Union Pacific Railroad Company |
| BLCX | The Commonwealth Plan Incorporated |
| BLE | Bessemer and Lake Erie Railroad Company |
| BLKM | Black Mesa and Lake Powell |
| BLKU | Bulkhaul Company Limited |
| BLKZ | Mid-American Intermodal Equipment Corporation |
| BLMR | Blue Mountain Railroad Incorporated |
| BLOL | Bloomer Line |
| BM | Boston and Maine Corporation |
| BMAZ | Transamerica Leasing (Better Asset Management) |
| BMCX | Bluewater Michigan Chapter Incorporated |
| BMDZ | Minnesota Dakota and Western Railway Company |
| BMH | Beaufort and Morehead Railroad Co |
| BMIZ | Burlington Motor Carriers |
| BML | Belfast and Moosehead Lake Railroad |
| BMRG | Blue Mountain and Reading Railroad |
| BMS | St. Lawrence and Atlantic Railroad Company (GWI) |
| BMSX | Bemis Company Incorporated |
| BMZ | Boston and Maine Corp |
| BN | Burlington Northern and Santa Fe Railway Company |
| BNAU | Burlington Northern and Santa Fe Railway Company |
| BNAZ | Burlington Northern and Santa Fe Railway Company |
| BNFE | Burlington Northern and Santa Fe Railway Company |
| BNIU | British and Irish Steam Packet Company |
| BNML | Burlington Northern (Manitoba) Limited |
| BNO | Burlington Northern and Santa Fe Railway Company |
| BNPZ | Pacific Rail Services |
| BNQ | Burlington Northern and Santa Fe Railway Company |
| BNRQ | Burlington Northern and Santa Fe Railway Company |
| BNRZ | Burlington Northern and Santa Fe Railway Company |
| BNSF | Burlington Northern and Santa Fe Railway Company |
| BNXU | Burlington Northern and Santa Fe Railway Company |
| BNZ | Burlington Northern and Santa Fe Railway Company |
| BO | CSX Transportation Incorporated |
| BOBX | Freeman Gas of N.C. Incorporated |
| BOCT | Baltimore and Ohio Chicago Terminal Railroad Company |
| BOCX | BOC Gases |
| BOGU | BSL Transport |
| BONU | Bond International Limited |
| BOP | Border Pacific Railroad Company |
| BORX | US Borax Incorporated |
| BORZ | Ecorail Incorporated |
| BOSU | W. BOS Vloeistof Transport B.V. |
| BOZ | CSX Transportation Incorporated |
| BPAX | US Dept of Energy Bonneville Power Administration |
| BPAZ | Acme Markets Incorporated |
| BPCU | B P Chemicals Belgium |
| BPCX | Basin Electric Power Cooperative |
| BPIX | Nova Chemicals Incorporated |
| BPLU | M1 Engineering Limited |
| BPLX | Nova Chemicals Incorporated |
| BPOX | BP Amoco Chemical Company (BP Oil Division) |
| BPPX | General American Marks Company |
| BPRR | Buffalo and Pittsburgh Railroad Incorporated |
| BR | Bradford Industrial Rail Incorporated |
| BRAN | Brandon Corporation |
| BRAX | CIT Group/Capital Finance Incorporated |
| BRBX | Bombardier Transportation |
| BRC | Belt Railway Company of Chicago |
| BRCX | Bunge North America Incorporated |
| BRCY | Cando Contracting Limited |
| BREX | Big Rivers Electric Corporation |
| BRFD | Branford Steam Railroad |
| BRG | Brownsville and Rio Grande International Railroad |
| BRIX | Union Tank Car Company |
| BRNU | Brun SA |
| BRNZ | Comtrak Incorporated |
| BROU | Swedish Transocean Lines |
| BRRC | Borinstein Railroad Company |
| BRRX | Brooklyn Resource Recovery Incorporated |
| BRW | Black River and Western Corporation |
| BS | Birmingham Southern Railroad Company |
| BSCX | Bethlehem Steel Corporation |
| BSDA | BSDA Railroad |
| BSIX | Bethlehem Steel Corporation |
| BSLU | Blue Star Line Limited |
| BSMX | Bay State Milling Company |
| BSOR | Buffalo Southern Railroad Incorporated |
| BSPX | Otter Tail Power Company |
| BSRX | Branson Scenic Railway Incorporated |
| BSTX | Trinitas Corporation |
| BSVY | Boone and Scenic Valley Railroad |
| BTAX | Air Liquide America Corporation |
| BTC | Birmingham Terminal |
| BTCO | Boston Terminal Company |
| BTCU | Bulkmatic Transport Co |
| BTCZ | Bulkmatic Transport Company |
| BTEX | BTE Equipment LLC |
| BTLZ | Intermodal Services Incorporated |
| BTRX | Rocky Mountain Transportation Services |
| BTTX | TTX Company |
| BUDX | Budd Company (temporary) |
| BUDZ | Bud Antle Incorporated |
| BUGX | Bruggere and Monson |
| BUKX | Louisville Gas and Electric Company |
| BUNZ | Burnside International Trucks Limited |
| BVCX | West Coast Express |
| BVHX | BV Heddrick Gravel and Sand Company |
| BVRY | Brandywine Valley Railroad Company |
| BWCX | GE Plastics |
| BXBX | BXB Corporation |
| BXN | Bauxite and Northern Railway Company |
| BYCX | Battle Ground Yacolt and Chelatchie Prairie Railroad |
| CA | Chesapeake and Albemarle Railroad |
| CABU | Bacardi and Company Limited |
| CABX | Cabot Corporation |
| CACZ | Comacasa Line |
| CADX | CAN DO Incorporated |
| CAFU | Bay Cities Leasing Company |
| CAGX | MHC Incorporated Subsidiary of ConAgra |
| CAGY | Columbus and Greenville Railway Company |
| CAGZ | Columbus and Greenville Railway |
| CALA | Carolina Southern Railroad Company |
| CALX | California Railcar Corporation |
| CANX | CANAC International Incorporated |
| CAOX | Westlake CA and O |
| CAPX | TransAlta Utilities Corporation |
| CARR | Carrollton Railroad |
| CARX | Lamson and Sessions |
| CARZ | Anton Caraton and Son |
| CASO | Canadian Pacific Railway (CASO) |
| CATU | CATU Containers SA |
| CAXU | Container Applications International Incorporated |
| CBC | Chemins de fer Baie des Chaleurs Incorporated |
| CBCX | Colonial Brick Company Incorporated |
| CBGR | Council Bluffs Railway Company/Great Western Railway of Iowa LLC |
| CBHU | China Ocean Shipping Company |
| CBIU | Combi Line-Lash |
| CBIX | Central Bi-Products |
| CBL | Conemaugh and Black Lick Railroad |
| CBLU | Cooper Brothers Containers Limited |
| CBNS | Cape Breton and Central Nova Scotia Railway (RailAmerica) |
| CBPU | CBSL Transportation Services Limited |
| CBQ | Burlington Northern and Santa Fe Railway Company |
| CBQZ | Burlington Northern and Santa Fe Railway Company |
| CBRM | Chillicothe-Brunswick Rail Maintenance Authority |
| CBRW | Columbia Basin Railroad Company |
| CBRX | Charles Barthoid |
| CBRY | Copper Basin Railway Incorporated |
| CBYN | Crosbyton Railway Company Incorporated |
| CC | Chicago Central and Pacific Railroad Company |
| CCAX | FDJ Leasing |
| CCBX | Union Carbide Corporation |
| CCCL | Connecticut Central Railroad Company |
| CCCU | Compass Container Co Incorporated |
| CCCZ | Compass Container Co Incorporated |
| CCDX | Dayton Power and Light Company |
| CCEZ | Chicago Central and Pacific Railroad Company |
| CCFZ | Chi-Can Freight Forwarding |
| CCGX | Cando Contracting Limited |
| CCHX | Columbian Chemicals Canada Limited |
| CCIM | Corpus Christie Terminal |
| CCIZ | Crete Intermodal |
| CCKX | CCKX Incorporated |
| CCKY | Chattooga and Chickamauga Railway Company |
| CCLU | Char Ching Shipping (USA) Limited |
| CCLX | Crystal Car Line Incorporated |
| CCPX | Canadian Chemical Producers Association |
| CCR | Kansas City Southern Railway Company |
| CCRA | Camp Chase Industrial Railroad Corporation |
| CCRR | Claremont Concord Railroad Corporation |
| CCRU | Compagnie Des Containers Reservoir |
| CCRX | Coastal Refining and Marketing Incorporated |
| CCRY | Charles City Railway Lines Incorporated |
| CCRZ | Kansas City Southern Railway Company |
| CCSU | Trans Ocean Limited |
| CCT | Central California Traction Company |
| CCTU | Coordinated Caribbean Transport Incorporated |
| CCTX | Central Power and Light Company |
| CCTZ | Crowley Maritime Corporation |
| CCUO | Chicago-Chemung Railroad Corporation |
| CCWX | Coastal Chem Incorporated |
| CCX | Columbian Chemicals Co (Subsidiary of Phelps Dodge Corporation) |
| CCXU | Char Ching Shipping (USA) Limited |
| CCXX | Costain Coal Incorporated |
| CDAC | Bangor and Aroostook Railroad Company (Canadian American Railroad Company) |
| CDAU | Canadian Tire Corporation Limited |
| CDAZ | Canadian Tire Corporation Limited |
| CDCX | Air Liquide America Corporation |
| CDGX | Chatham Oil Company (Bridgeview Systems LLC) |
| CDHX | Caledonian Rail Lines LLC |
| CDLZ | Cardinal Freight Carriers |
| CDNU | Carotrans International |
| CDTX | California Department of Transportation |
| CDVX | Caddo Valley Railcar Repair Incorporated |
| CEBX | Combustion Engineering Incorporated |
| CEDR | Cedar River Railroad Company |
| CEFX | CIT Group/Capital Finance Incorporated |
| CEI | Union Pacific Railroad Company |
| CEIW | Central Indiana and Western RR Company |
| CELX | Celtran Incorporated Subsidiary of Celanese International Corporation |
| CEMR | Central Manitoba Railway Incorporated (Cando) |
| CEMX | Cemex Mexico SA de CV |
| CENX | Western Aggregates Incorporated |
| CEPX | Trinity Industries Leasing |
| CERA | Central Railroad Company of Indianapolis |
| CERX | ER Carpenter LLP |
| CETU | Custom Environmental Transport Incorporated |
| CEWX | Canadian Enterprise Gas Products |
| CF | Cape Fear Railways Incorporated |
| CFKZ | XTRA Intermodal |
| CFLX | Crestbrook Forest Industries (captive service) |
| CFMX | Cargill Incorporated |
| CFNR | California Northern Railroad Company |
| CFRU | Cardinal Freight Carriers |
| CFSX | C and T Refinery Incorporated |
| CFTX | Canadian Fertilizers Limited |
| CFWR | Caney Fork and Western Railroad |
| CG | Norfolk Southern Railway Company |
| CGAX | Cargill Incorporated C.G.D. Division |
| CGBX | Dow Chemical Canada Incorporated |
| CGCX | Cargill Incorporated C.G.D. Division |
| CGDX | Eastern Propane Gas (Country Gas Distributors Incorporated) |
| CGEX | Cargill Incorporated C.G.D. Division |
| CGFX | Consolidated Gas Company of Florida |
| CGLX | GATX Rail Canada Corporation |
| CGMU | Compagnie Generale Maritime (French Line) |
| CGMX | GATX Rail Canada Corporation |
| CGMZ | Compagnie Generale Maritime (French Line) |
| CGNE | Champagne Railroad Incorporated |
| CGOX | Cargill Incorporated |
| CGR | CG Railway Incorporated |
| CGRX | Consolidated Grain and Barge Company |
| CGSX | Proflame Incorporated |
| CGT | Canada and Gulf Terminal Railway |
| CGTU | Compagnie Generale Maritime (French Line) |
| CGTX | GATX Rail Canada Corporation |
| CGW | Union Pacific Railroad Company |
| CHAU | Combined Transport Group Incorporated |
| CHAX | Chartrand's Tank Car Service Incorporated |
| CHEX | Equistar Chemicals |
| CHFU | Challenge International |
| CHIU | Chimco - Bulgaria |
| CHLX | Chemleco Incorporated |
| CHMX | First Union Rail |
| CHP | Ferrocarriles Nacionales de Mexico |
| CHR | Chestnut Ridge Railway Company |
| CHRC | Chaparral Railroad Company Incorporated |
| CHRR | Chesapeake Railroad Company |
| CHRX | The Chesapeake Division |
| CHSX | Cenex Harvest States Cooperative |
| CHSZ | Intermodal Services Incorporated |
| CHTS | Penn Eastern Rail Lines Incorporated |
| CHTT | Union Pacific Railroad Company |
| CHVX | Chevron Chemical Company |
| CHW | Norfolk Southern Railway Company |
| CI | Cambria and Indiana Railroad Company |
| CIC | Cedar Rapids and Iowa City Railway |
| CIIX | Contico International Incorporated |
| CIND | Central Railroad Company of Indiana |
| CIPX | Ameren Energy Generating Company |
| CIR | City of Rochelle Illinois |
| CIRR | Chattahoochee Industrial Railroad |
| CIRX | Consbec Incorporated |
| CIRY | Central Illinois Railroad Company |
| CISD | Colonel's Island Railroad Company |
| CITU | Citroen |
| CITX | PLM International Incorporated |
| CIW | Illinois Central Railroad Company (CN) |
| CIXX | Calciner Industries Incorporated |
| CJPX | General Electric Rail Services Corporation |
| CKIX | C.K. Industries |
| CKP | Colorado Kansas and Pacific Railway Company |
| CKRY | Kansas and Oklahoma Railroad Incorporated |
| CKSI | Carthage Knightstown and Shirley Railroad |
| CLC | Columbia and Cowlitz Railway Company |
| CLCX | Chatahoochee Locomotive Company |
| CLCZ | Complete Logistics Company |
| CLDZ | Celadon Trucking Services Incorporated |
| CLEX | Cieco Corporation |
| CLGU | Costa Line Cargo Services |
| CLIX | Calumet Lubricants |
| CLMX | Cyprus Sierrita Corporation |
| CLNA | Carolina Coastal Railway Incorporated |
| CLOU | CLOU Container Leasing GmbH |
| CLOX | Clark Refining and Marketing Incorporated |
| CLP | Clarendon and Pittsford Railroad Company |
| CLPX | Boulder Scientific Company |
| CLPZ | Clarendon and Pittsford Railroad Company |
| CLRX | Clayton Rail |
| CLSL | Columbia and Silver Creek Railroad |
| CLSX | Cargill Incorporated - Salt Division |
| CLTU | Chemical Leaman Tank Lines Incorporated |
| CLTX | Cloro de Tehuantepec SA de CV |
| CM | Central Montana Rail Incorporated |
| CMBU | CMB SA |
| CMC | CMC Railroad Incorporated |
| CMCU | Crowley Maritime Corporation |
| CMCX | Sweetman Construction Company |
| CMCZ | Crowley Maritime Corporation |
| CMDX | Cargill Incorporated |
| CMGN | Central Michigan Railway Company |
| CMHX | CarMath Incorporated |
| CMIX | Consolidated Minerals Incorporated |
| CMLU | Containers Marine Lines (Division of American Export) |
| CMLX | Craggy Mountain Line Incorporated |
| CMLZ | Containers Marine Lines Isbrandtsen |
| CMMU | Medcontainers |
| CMO | Union Pacific Railroad Company |
| CMPA | Madison Railroad Division of City of Madison Port Authority |
| CMPU | Complete Logistics Company |
| CMSN | Crowley Marine Services |
| CMU | Columbus Charter Service |
| CMUU | Canada Maritime Agencies Limited |
| CN | Canadian National Railway |
| CNA | Canadian National Railway |
| CNAZ | Grand Trunk Western Railroad Incorporated (CN) |
| CNDX | Connecticut Department of Transportation |
| CNEU | Canadian National Railway |
| CNEZ | Canadian National Railway |
| CNGU | Sicng (Ind. Chim. Du Nord de la Grece SA) |
| CNGX | CONAG Finance Incorporated-CNG Transmission Corporation |
| CNHX | Ontario Power Generation Incorporated |
| CNIS | Canadian National Railway |
| CNLX | CANAC International Incorporated |
| CNMZ | Consolidated Rail Corporation |
| CNNU | Compania Nacional de Nabegacao (US African Line) |
| CNOR | Cincinnati Northern |
| CNOW | Columbia and Northern Railway Company |
| CNPU | Canadian National Railway |
| CNPZ | Canadian National Railway |
| CNQ | Canadian National Railway |
| CNRR | California Northern Railroad |
| CNRU | Canadian National Railway |
| CNRX | Canadian National Railway |
| CNRZ | Canadian National Railway |
| CNSX | Consolidated Oil and Transportation Company Incorporated |
| CNTP | Cincinnati New Orleans and Texas Pacific Railway Company |
| CNTX | Continental Tank Car Corporation |
| CNUR | C and NC Railroad Corporation |
| CNVX | Convoyeur National Incorporated |
| CNW | Union Pacific Railroad Company |
| CNWX | Canadian Wheat Board |
| CNWZ | Union Pacific Railroad Company |
| CNYX | Central New York Locomotive Company |
| CNZR | Central New England Railroad Company |
| CO | CSX Transportation Incorporated |
| COAX | Trinity Rail Management Incorporated |
| COBX | Cobre Mining Company Limited |
| COCX | Chevron Oronite Company LLC |
| COEH | Conecuh Valley Railroad |
| COER | Crab Orchard and Egyptian Railroad |
| COEZ | Crab Orchard and Egyptian Railroad |
| COLX | Alliant Energy |
| COMX | Commonwealth Edison Company |
| CONU | Contrans |
| CONX | Conoco Incorporated |
| COOK | Cook Transit |
| COOX | First Union Rail |
| COP | City of Prineville Railway |
| COPX | CanadianOxy Industrial Chemicals Limited Partnership |
| CORP | Central Oregon and Pacific Railroad Incorporated |
| CORU | CATU Containers SA |
| CORX | Coors Brewing Company |
| COSU | China Ocean Steamship Limited |
| COSX | Cabot Corporation CAB-O-SIL Division |
| COTX | GLNX Corp |
| COZ | CSX Transportation Incorporated |
| CP | Canadian Pacific Railway Company |
| CPAA | Canadian Pacific Railway Company |
| CPAX | CITGO Petroleum Corporation |
| CPBU | Soo Line Railroad (CPR) |
| CPBZ | Soo Line Railroad (CPR) |
| CPCX | Chevron Phillips Chemical Company LP |
| CPDR | Carolina Piedmont Division/South Carolina Central Railroad Company |
| CPDU | Delaware and Hudson Railway Company Incorporated |
| CPDX | Chevron USA Incorporated |
| CPDZ | Delaware and Hudson Railway Company Incorporated |
| CPGZ | ContainerPort Group Incorporated |
| CPHX | Ontario Power Generation Incorporated |
| CPI | Canadian Pacific Railway Company |
| CPIX | ICI Acrylics Incorporated |
| CPLX | CPLX Leasing Limited |
| CPOX | Consumers Power Company |
| CPPU | Canadian Pacific Railway Company |
| CPPX | Consolidated Papers Incorporated |
| CPPZ | Canadian Pacific Railway Company |
| CPRS | Canadian Pacific Railway Company |
| CPRX | Carolina Power and Light Company |
| CPRZ | Canadian Pacific Railway Company |
| CPT | Canadian Pacific Railway Company |
| CPVU | Containers and Pressure Vessels Limited |
| CPWX | Canadian Wheat Board |
| CQPA | Central Columbiana and Pennsylvania Railway Incorporated |
| CR | Norfolk Southern Railway Company |
| CRAZ | Cornucopia Transportation Incorporated |
| CRCX | Consolidated Rail Corporation |
| CRCZ | Norfolk Southern Railway Company |
| CRDX | Chicago Freight Car Leasing Company |
| CRE | Consolidated Rail Corporation (Eastern District) |
| CREU | Canadian Retail Shippers Association |
| CREX | Citicorp Railmark Incorporated |
| CREZ | Canadian Retail Shippers Association |
| CRGX | Cargill Incorporated |
| CRIJ | Carolina Rail Services Incorporated |
| CRIX | Citicorp Railmark Incorporated |
| CRL | Chicago Rail Link |
| CRLE | Coe Rail Incorporated |
| CRLU | Carlisle Leasing International |
| CRLX | Canadian Railserve Limited |
| CRMU | Norfolk Southern Railway Company |
| CRMZ | Norfolk Southern Railway Company |
| CRN | Norfolk Southern Railway Company |
| CRPU | Norfolk Southern Railway Company |
| CRPX | Centennial Gas Liquide LLC |
| CRQU | Norfolk Southern Railway Company |
| CRR | CSX Transportation Incorporated |
| CRRX | Canon City and Royal Gorge Railroad LLC |
| CRSX | Cost Rail Service |
| CRTZ | Norfolk Southern Railway Company |
| CRXU | Cronos Containers (U.K.) |
| CRYX | Cryo-Trans Incorporated |
| CRZ | Norfolk Southern Railway Company |
| CS | Burlington Northern and Santa Fe Railway Company |
| CSAU | Costa Line |
| CSBX | Cargill Incorporated - Salt Division |
| CSCD | Cascade and Columbia River Railroad Company |
| CSCX | Coal Supply Corporation |
| CSDX | Metropolitan Water Reclamation District of Greater Chicago |
| CSKR | C and S Railroad Corporation |
| CSKU | Consolidated Services Incorporated |
| CSL | Chicago Short Line Railway Company |
| CSMX | Carol and Andy Muller |
| CSNX | Trident NGL Incorporated |
| CSO | Connecticut Southern Railroad |
| CSOX | CITGO Petroleum Corporation |
| CSP | Camas Prairie RailNet Incorporated |
| CSPX | Chesapeake Speciality Products |
| CSRX | Conway Scenic Railroad |
| CSRZ | CSX Transportation Incorporated |
| CSS | Chicago SouthShore and South Bend Railroad |
| CSTX | Canada Starch Company Incorporated |
| CSUX | City of Colorado Springs Department of Electric Generation |
| CSVU | Compania Sud Americana de Vapores GmbH |
| CSWX | Central and South West Services Incorporated |
| CSXE | CSX Transportation Incorporated |
| CSXT | CSX Transportation Incorporated |
| CSXU | CSX Transportation Incorporated |
| CSXZ | CSX Transportation Incorporated |
| CSYX | Central Soya Company Incorporated |
| CT | City of Columbia (Columbia Terminal) |
| CTCU | Container Trading Company |
| CTCX | Endasa SA de CV |
| CTE | Cen-Tex Rail Link Limited |
| CTEU | Spanish Lines |
| CTEX | PLM International Incorporated |
| CTGZ | Combined Transport Group Incorporated |
| CTIE | Kansas City Southern Railway Company |
| CTIU | CTI-Container Transport International Incorporated |
| CTIX | Southeastern Industrial Enterprises Incorporated |
| CTIZ | CTI-Container Transport International Incorporated |
| CTKU | Container Tank Services Limited |
| CTLX | Endasa SA de CV |
| CTML | Cairo Terminal Railroad Company |
| CTN | Canton Railroad Company |
| CTNX | General Electric Rail Services Corporation |
| CTOU | Chem-Rail Logistics LLC |
| CTPX | Courtesy Corporation |
| CTR | Clinton Terminal Railroad Company |
| CTRN | Union Pacific Railroad Company |
| CTRR | Cloquet Terminal Railroad Company Incorporated |
| CTRU | Container Trading Company |
| CTRW | Carlton Trail Railway Company (OmniTRAX) |
| CTRX | C and T Refinery Incorporated |
| CTSU | Bibby Bros Company |
| CTSX | CTS Cement Manufacturing Incorporated (Chem Comp Systems) |
| CTSZ | Carotrans International |
| CTTX | TTX Company |
| CTUU | Container Trading Company |
| CTVX | Cleveland Terminal and Valley Railway Incorporated |
| CTWU | Container Trading Company |
| CTZZ | Continental Transportation Company |
| CUEX | Colorado-Utility Electric Association |
| CUOH | Columbus and Ohio River Rail Road Company |
| CUST | Chicago Union Station Company |
| CUVA | ISG Cleveland Works Railway Company |
| CV | Grand Trunk Western Railroad Incorporated (CN) |
| CVC | Canadian National Railway |
| CVQ | Grand Trunk Western Railroad Incorporated (CN) |
| CVR | Cimarron Valley Railroad LC |
| CVRX | Locomotive and Tower Preservation Fund Limited |
| CVRY | Caddo Valley Railroad Company |
| CVRZ | Grand Trunk Western Railroad Incorporated (CN) |
| CVYR | Caddo Valley Railroad Company |
| CW | Colorado and Wyoming Railway Company |
| CWBX | C. W. Brooks Incorporated |
| CWCX | Canandaigua Wine Company Incorporated |
| CWCY | Caldwell County Railroad Company |
| CWEX | Midwest Generation LLC |
| CWIU | Con-Way Intermodal |
| CWIZ | Con-Way Intermodal |
| CWMX | Chemical Waste Management Incorporated |
| CWP | Chicago Rail Link |
| CWR | CWR Incorporated |
| CWRL | Central Western Railway Corporation (RailAmerica) |
| CWRO | ISG Cleveland Works Railway Company (Cleveland Works Railway Company) |
| CWRY | Commonwealth Railway Incorporated |
| CWRZ | Providence and Worcester Railroad Company |
| CWTX | ChemWest Industries Incorporated |
| CWTZ | Con-Way Truckload Services |
| CXCZ | CSX Lines LLC |
| CXPZ | CSX Transportation Incorporated |
| CXRZ | CSX Transportation Incorporated |
| CXVZ | CSX Intermodal Incorporated |
| CYCY | Crystal City Railroad Incorporated |
| CYDX | Conrad Yelvington Distributors Incorporated |
| CYTX | Construcciones Y Trituaraciones SA de CV |
| CZCX | Crown Zellerbach Corporation |
| CZRY | Carrizo Gorge Railway Incorporated |
| DA | Canadian Pacific Railway Company |
| DACX | VIP Tank Services |
| DAFU | Dafra Lines SA |
| DAFX | Department of Defense Troop Support and Aviation Material Readiness |
| DAFZ | Dafra Lines SA |
| DAIR | D and I Railroad Company |
| DAKR | Dakota Rail Incorporated |
| DAKS | Dakota Short Line |
| DAKX | DAK Americas LLC |
| DALT | Dallas Terminal Railway |
| DALZ | D and A Leasing Incorporated |
| DAPX | Dairyland Power Cooperative |
| DARU | Dart Containerline Incorporated |
| DARZ | Dart Intermodal Incorporated |
| DATU | Dart Containerline Incorporated |
| DATX | DATX Associates |
| DAVX | W. R. Grace and Company - Conn. Davison Chemical Division |
| DAWX | D.A. Walmsley and Company |
| DAX | Occidental Chemical Corporation |
| DBCX | BASF Corporation |
| DBSU | Donbar Steamship Company Incorporated |
| DBUX | CIT Group/Capital Finance Incorporated |
| DC | Delray Connecting Railroad Company |
| DCAX | Tarmac Fla. Incorporated |
| DCBX | Degussa Corporation |
| DCCU | Dow Corning Corporation |
| DCCX | McDonnell Douglas Corporation |
| DCFX | PLM International Incorporated |
| DCIU | Dana Container Incorporated |
| DCIX | Danella Construction Corporation |
| DCLU | Dutch Container Leasing B.V. |
| DCLX | Dow Chemical Canada Incorporated |
| DCOU | Dow Corning Corporation |
| DCPX | Dart Container Corporation of Pennsylvania |
| DCRR | Dubois County Railroad |
| DCSU | Delta Conteneur Service |
| DCTX | PLM International Incorporated |
| DDDX | Frontier Cooperative Company |
| DDEX | Dupont Dow Elastomers LLC |
| DDNX | Didion Incorporated |
| DEBX | Ceres AG Products |
| DEEX | Detroit Edison Company |
| DEGX | Mississippi Power Company |
| DEMX | Demeter Incorporated |
| DETX | Detroit Edison Company |
| DFTX | DTE Transportation Services Limited |
| DGBY | Digby Trucklines |
| DGCX | Dakota Gasification Company |
| DGHX | IMC Chemicals |
| DGIX | D and G Enterprises LLC |
| DGNO | Dallas Garland and Northeastern Railroad Incorporated |
| DH | Delaware and Hudson Railway Company Incorporated |
| DHNY | Delaware and Hudson Railway Company Incorporated |
| DHPX | Degussa Corporation |
| DHRU | Den Hartogh NV |
| DIIU | Dart Intermodal Incorporated |
| DJBX | Gandy Dancer Incorporated (Donald J. Bertel) |
| DJJX | Joseph Transportation Incorporated |
| DJLX | Joseph Leasing Limited |
| DJMX | Daniel John Marnell |
| DJPX | Joseph Transportation Incorporated |
| DJRX | Joseph Transportation Incorporated |
| DJTX | Joseph Transportation Incorporated |
| DKPX | Duke Power Company (Scale Test Cars) |
| DKS | Union Pacific Railroad Company |
| DKUX | Exxon Mobil Corporation |
| DL | Delaware-Lackawanna Railroad Company |
| DLC | Drummond Lighterage |
| DLFX | Diversified Lease Funding Incorporated |
| DLKU | Deltank Limited |
| DLMX | Daylight Locomotives and Machine Works Incorporated |
| DLPX | DeGussa Canada Limited |
| DLRX | General Electric Rail Services Corporation |
| DLSX | Diesel Supply Company Incorporated |
| DLTX | Dale L. Thornborough |
| DLVX | Thiokol Corporation |
| DLWR | Depew Lancaster and Western Railroad Company Incorporated |
| DLWX | D.L. and W. Incorporated |
| DM | Lake State Railway Company |
| DME | Dakota Minnesota and Eastern Railroad Corporation |
| DMHX | Davenport Mammoet LLC |
| DMIR | Duluth Missabe and Iron Range Railway Company |
| DMIX | ADM Transportation |
| DMLX | General Electric Rail Services Corporation |
| DMLZ | DML Containers |
| DMM | Dansville and Mount Morris Railroad Company |
| DMVW | Dakota Missouri Valley and Western Railroad Incorporated |
| DNAX | Dana Railcare |
| DNE | Duluth and Northeastern Railroad Company |
| DOCX | Du Pont Canada Incorporated |
| DODU | Department of Defense (US) |
| DODX | Deptartment of Defense Military Traffic Management Command |
| DODZ | Department of Defense (US) 20' chassis |
| DOEX | Doe Run Resources Corporation (The Doe Run Company) |
| DOLX | Dolese Brothers Company |
| DOTX | USDOT/Federal Railroad Administration |
| DOWU | Dow Chemical Company |
| DOWX | Dow Chemical Company |
| DPDZ | Delaware and Hudson Railway Company Incorporated |
| DPGX | Tractech Systems |
| DPIX | Dufour Petroleum Incorporated |
| DQE | De Queen and Eastern Railroad Incorporated |
| DR | Dardanelle and Russellville Railroad Incorporated |
| DREX | ProTrade Steel Company Limited |
| DRGW | Union Pacific Railroad Company |
| DRGX | Denver and Royal Gorge Railway LLC |
| DRI | Rock Island and North Western RR Company Davenport |
| DRIR | Denver Rock Island Railroad |
| DRMX | Danbury Railway Museum Incorporated |
| DRSX | D.O.T. Rail Services Incorporated |
| DRTU | Dart Intermodal Incorporated |
| DRTZ | Dart Intermodal Incorporated |
| DSA | Soo Line Railroad (CPR) |
| DSBU | Ameribrom Incorporated |
| DSCX | DIFCO Incorporated |
| DSIX | Dowell Schlumberger Incorporated |
| DSLX | DeGussa Corporation |
| DSLZ | Intermodal Services Incorporated |
| DSRC | Dakota Southern Railway Company |
| DSRR | Delta Southern Railroad Company |
| DSSX | Detroit Salt Company LLC |
| DT | Decatur Junction Railway Company |
| DTCX | DTE Transportation Services Incorporated |
| DTEX | Dresser Transportation Equipment Division of Dresser Industries |
| DTI | Grand Trunk Western Railroad Incorporated (CN) |
| DTIZ | Grand Trunk Western Railroad Incorporated (CN) |
| DTLX | Delta Tank Line Company |
| DTRR | Housatonic Rail Road Company |
| DTS | Grand Trunk Western Railroad Incorporated (CN) |
| DTTX | TTX Company |
| DTZZ | Direct Transit Incorporated |
| DUCX | Du Pont Canada Incorporated |
| DUFX | Duffy and Sons Incorporated |
| DUKX | Dupps Company |
| DUPX | Du Pont De Nemours and Company Incorporated |
| DUT | Denver Union Terminal Railway Company |
| DUTC | Dallas Union Terminal |
| DV | Delaware Valley Railway Company |
| DVLX | Freeport-McRo-Ran Sulphur Company |
| DVR | Devco Railway Cape Breton Development Corporation (Coal Division) |
| DVRU | Dover Limited |
| DVS | Delta Valley and Southern Railway Company |
| DVSZ | Delta Valley and Southern Railway Company |
| DWAU | Degussa Antwerpen NV |
| DWC | Canadian National Railway |
| DWCX | David Witherspoon Incorporated |
| DWP | Duluth Winnipeg and Pacific Railway |
| DYLX | Transportation Equipment |
| DYNX | Dyno Nobel Incorporated |
| EACH | East Camden and Highland RR Company |
| EACU | East Asiatic Company Limited |
| EAGX | Eaglebrook Incorporated |
| EARY | Eastern Alabama Railway |
| EASO | EASX Corporation (EASX Railroad Corporation) |
| EASU | Waterfront Container Leasing Company Incorporated |
| EASZ | Waterfront Container Leasing Company Incorporated |
| EBAX | Albermarle Corporation |
| EBBX | Ed Burrier and Associates |
| EBPX | Empire Builder Private Cars |
| ECBR | East Cooper and Berkeley Railroad Company |
| ECCX | Ethyl Canada Incorporated |
| ECDU | ECDC Environmental LC |
| ECDX | Ethyl Petroleum Additives Incorporated |
| ECGX | Alabama Power Company |
| ECIX | Erman Corporation |
| ECLX | ELM-Central Rail Leasing LP |
| ECO | Ecorail Incorporated |
| ECOX | Eco East |
| ECOZ | Ecorail Incorporated |
| ECPX | E.C.C. America Incorporated |
| ECQX | Engineered Carbons Incorporated |
| ECRX | Econo-Rail Corporation |
| ECRZ | Norfolk Southern Railway Company |
| ECTB | East Chattanooga Belt Railway Company |
| ECUX | Exxon Mobil Corporation |
| ECXX | ECDC Environmental LC |
| EDCX | El Dorado Chemical Company |
| EDEX | Empire District Electric Company |
| EDGX | Alliant Energy |
| EDIU | EDI Incorporated |
| EDIZ | EDI Incorporated |
| EDW | El Dorado and Wesson Railway Company |
| EDZX | Envases de Zacatecas SA de CV |
| EE | Ellis and Eastern Company |
| EEC | East Erie Commercial Railroad |
| EEIX | Electric Energy Incorporated |
| EELX | General Electric Rail Services Corporation |
| EFRR | Effingham Railroad Company |
| EGSX | Entergy Gulf States Incorporated |
| EHSX | Essex Hybrid Seed Company Incorporated |
| EICX | Edlow International Company |
| EIDU | Ethyl S A |
| EIRC | Eastern Illinois Railroad Company |
| EIRR | Eastern Idaho Railroad Incorporated |
| EISU | Evergreen International (USA) |
| EJE | Elgin Joliet and Eastern Railway Company |
| EJR | East Jersey Railroad and Terminal |
| EKBU | Keiserling (UK) Limited |
| EKLU | K Line |
| EL | Norfolk Southern Railway Company |
| ELCX | Eli Lilly and Company |
| ELFX | Electric Fuels Corporation |
| ELKR | Elk River Railroad Incorporated |
| ELKX | Elkem Metals Company |
| ELS | Escanaba and Lake Superior Railroad Company |
| ELSX | Kentucky May Coal Company Incorporated |
| ELTX | Soltex Polymer Corporation |
| EM | Edgemoor and Manetta Railway |
| EMAX | EMAS |
| EMCU | Evergreen Marine Corporation |
| EMCZ | Evergreen International (USA) Corporation |
| EMEU | East Med Tanks Limited |
| EMHR | East Mahanoy and Hazelton Railroad Company |
| EMHU | EMP |
| EMIX | Environmental Management Incorporated |
| EMMU | Eastern Mediterranean Container Company Limited |
| EMPU | REZ-1 |
| EMPX | Empiregas Equipment Corporation |
| EMRY | Eastern Maine Railway Company |
| EMTU | East-Med Tanks International |
| EMUU | REZ-1 |
| EN | Canadian Pacific Railway Company |
| ENDX | GATX de Mexico SA de CV |
| ENGX | Englehard Corporation |
| ENR | E and N Railway Company (1998) Limited (RailAmerica) |
| ENRX | United States Enrichment Corporation |
| ENSZ | Norfolk Southern Railway Company |
| EOGX | Union Carbide Ethylene Oxide/Glycol Company |
| EPAX | Exxon Mobil Corporation |
| EPCX | Enterprise Products Company |
| EPIX | EPIC |
| EPRY | East Penn Railway Incorporated |
| EPTC | East Portland Traction Company |
| EQUX | Equistar Chemicals |
| ERBU | Containers for Bulk Haul Kieserling |
| ERCU | Erco Industries Limited |
| ERCX | EXCEL Railcar Corporation |
| ERFU | Ermefer SA |
| ERIX | Eric Dewayne Hopp |
| ERLX | General Electric Rail Services Corporation |
| ERSX | Excel Railcar Services Incorporated |
| ESCX | First Security Bank National Association |
| ESHR | Eastern Shore Railroad Incorporated |
| ESLJ | East St. Louis Junction Railroad |
| ESLZ | East St. Louis Junction Railroad |
| ESRX | Empire State Railcar Incorporated |
| ESSU | K Line |
| ESSX | Colonial Chemical Company |
| ETC | East Texas Central Railroad |
| ETCX | Eastman Chemical Company Incorporated |
| ETL | Essex Terminal Railway Company |
| ETMX | Etarco Rail Services Incorporated |
| ETRX | Arkansas Power and Light Company |
| ETRY | East Tennessee Railway LP |
| ETSX | Emery Tree Service Incorporated |
| ETTX | TTX Company |
| EUGX | Farmland Industries Incorporated |
| EURX | Eurocan Pulp and Paper Company |
| EUSX | Exxon Mobil Corporation |
| EV | Everett Railroad Company |
| EVAU | Eisenbahn-Vverkehrsmittel A.G. |
| EVT | Evansville Terminal Company Incorporated |
| EWR | Elkhart and Western Railroad Company |
| EWSX | Indianapolis Power and Light Company |
| EXEX | Commonwealth Edison Company |
| EXFU | Exsif |
| EXMX | Express Marco Incorporated |
| FAIX | FAIX Leasing |
| FALX | Falk Corporation |
| FANU | Brenner Tank Incorporated |
| FAPR | Floydada and Plainview Railroad Company |
| FBAU | Ahlers Lines NV |
| FBDC | Ford County Historical Railroad Preservation Foundation |
| FBFU | Marine Transworld Equipment Corporation |
| FBMU | CIE Maritime Belge SA |
| FBMX | Fayblock Materials |
| FBSU | Franco Belgian Services |
| FBZU | China Ocean Shipping Company |
| FC | Fulton County Railroad Incorporated |
| FCCM | Compania de Ferrocarriles Chiapas Mayab SA de CV |
| FCCX | Finova Capital Corporation |
| FCEN | Florida Central Railroad Company Incorporated |
| FCEX | Cenex Harvest States Cooperative |
| FCHZ | Flexi-Van Leasing Incorporated |
| FCM | Ferrocarriles Nacionales de Mexico |
| FCOX | FLO CO2 Incorporated |
| FCP | Ferrocarriles Nacionales de Mexico |
| FCPZ | National Railways of Mexico (Ferrocarriles Nacionales) |
| FCSX | Florida Crushed Stone Company |
| FCTX | Farmers Commodities Transportation |
| FDDM | Union Pacific Railroad Company |
| FDSU | Foodsource Incorporated |
| FDSZ | Foodsource Incorporated |
| FEC | Florida East Coast Railway Company |
| FECU | Yamashita-Shinnihon Line |
| FECZ | Florida East Coast Railway Company |
| FEIX | Farmers Elevator Incorporated of Grace City |
| FEXZ | Florida Express Carriers Incorporated |
| FFEZ | Frozen Food Express |
| FFFZ | Flexi-Van Leasing Incorporated |
| FFIX | Procor Limited |
| FFTX | Fun Trains Incorporated |
| FGCX | Florida Gulf Coast Railroad Museum Incorporated |
| FGER | Fruit Growers Express Company |
| FGGX | Farmers Grain Co-Operative |
| FGLK | Finger Lakes Railway Corporation |
| FGLX | Factor Gas Liquids Incorporated |
| FGMR | Fruit Growers Express Company |
| FGWX | Federal Grain Inspection Service (USDA) (Scale Test Cars) |
| FILX | Wellman Incorporated |
| FIMX | Franklin Industrial Minerals (FIM) |
| FINU | Interpool Limited |
| FINX | Trinity Rail Management Incorporated |
| FIR | Flats Industrial Railroad Company |
| FISZ | Ecorail Incorporated |
| FJLX | Big West Oil Company |
| FLAX | Flexsys America LP |
| FLAZ | Flexi-Van Leasing Incorporated |
| FLCX | Flex Leasing Corporation |
| FLDX | DTE Transportation Services Incorporated |
| FLEX | RailLease Incorporated |
| FLGZ | Flexi-Van Leasing Incorporated |
| FLIX | Farmland Industries Incorporated |
| FLJX | Big West Oil Company |
| FLNX | Ohio Railway Supply (R.P. Flynn Incorporated) |
| FLOX | Flex Leasing Corporation |
| FLRX | ADM Milling Company |
| FLSX | Great Miami Incorporated |
| FLT | Foss Launch and Tug |
| FLTZ | Flexi-Van Leasing Incorporated |
| FLXU | Flexi-Van Containers/Chassis |
| FLXZ | Flexi-Van Leasing Incorporated |
| FMCU | FMC Corporation Industrial Chemical Group |
| FMGU | Flota Mercante Grancolombiana SA |
| FMID | Florida Midland Railroad Company Incorporated |
| FMIX | CCKX Incorporated |
| FMLX | FMC Corporation |
| FMOX | FMC Corporation |
| FMRC | Farmrail Corporation |
| FNAX | Ferrellgas LLP |
| FNE | TFM SA de CV |
| FNOR | Florida Northern Railroad Company Inc |
| FORZ | Flexi-Van Leasing Incorporated |
| FP | Fordyce and Princeton Railroad Company |
| FPAX | Formosa Transrail Corporation |
| FPBX | International Paper Corporation |
| FPCX | Oxy Vinyls LP |
| FPN | Ferrocarriles Nacionales de Mexico |
| FPPX | Fayette Power Project |
| FPXZ | Flexi-Van Leasing Incorporated |
| FRDN | H and S Railroad Company Incorporated |
| FREU | ABS Industrial Verification Incorporated |
| FRLU | Farrell Lines Incorporated |
| FRR | Falls Road Railroad Company Incorporated |
| FRRX | Feather River Rail Society |
| FRSU | China Ocean Shipping Company |
| FRTX | Farm-City Transport Incorporated |
| FRVR | Fox Valley and Western Limited |
| FSFL | Burlington Northern and Santa Fe Railway Company |
| FSHX | General Electric Rail Services Corporation |
| FSIX | FSIX Incorporated |
| FSR | Fort Smith Railroad Company |
| FSRR | Ferrocarril del Sureste SA de CV |
| FST | Ferrocarriles Nacionales de Mexico |
| FSTU | Fastrac Intermodal LLC |
| FSTX | Fuel Supply Trust |
| FSTZ | Fastrac Intermodal LLC |
| FSUD | Fort Street Union Depot Company |
| FSVB | Fort Smith and Van Buren Railway Co |
| FTCU | Firsttank Corporation |
| FTMZ | Fruit Growers Express Company |
| FTSX | Fairmont Tamper |
| FTTX | TTX Company |
| FUCU | Shinko Pantec Company Limited |
| FURX | First Union Rail |
| FUS | Ferrocarriles Nacionales de Mexico |
| FVIU | Flexi-Van Incorporated |
| FVIZ | Flexi-Van Leasing Incorporated |
| FVLZ | Venezuelan Line |
| FVPZ | Flexi-Van Leasing Incorporated |
| FVRR | Fredonia Valley Railroad Incorporated |
| FVW | Fox Valley and Western Limited |
| FWAZ | Flexi-Van Leasing Incorporated |
| FWCR | Florida West Coast Railroad Incorporated |
| FWD | Burlington Northern and Santa Fe Railway Company |
| FWDB | Fort Worth and Dallas Belt Railroad |
| FWDR | Fort Worth and Dallas Railroad Company |
| FWIU | Trans Ocean Limited |
| FWLX | Foster Wheeler Limited |
| FWRY | Fillmore Western Railway Company |
| FwTZ | Flexi-Van Leasing Incorporated |
| FWWR | Fort Worth and Western Railroad Company |
| FXE | Ferrocarril Mexicano SA de CV |
| GA | CSX Transportation Incorporated |
| GAAB | Georgia and Alabama Division South Carolina Central Railroad Company |
| GABX | General American Marks Company |
| GACX | General American Marks Company |
| GAEX | General American Marks Company |
| GAFX | Fuller Company |
| GALX | Georgia Power Company |
| GAMX | Arrendadora Nacional De Carros De Ferrocaril |
| GANO | Georgia Northern Railway Company |
| GAPX | Georgia Gulf Corporation-Plaquemine Division |
| GARX | GATX de Mexico SA de CV |
| GASX | General American Marks Company |
| GATU | Gateway Container Leasing |
| GATX | General American Marks Company |
| GBRX | Greenbrier Leasing Corporation |
| GBRY | Gettysburg Railway |
| GBRZ | Greenbrier Leasing Corporation |
| GBW | Fox Valley and Western Limited |
| GC | Georgia Central Railway LP |
| GCAU | G.C.A. Transport Limited |
| GCCX | General American Marks Company |
| GCDU | Overseas Container Limited |
| GCEU | Genstar Container Corporation |
| GCEZ | Genstar Container Corporation |
| GCFX | Alstom Canada Incorporated - Transport |
| GCIX | Gabriel Chemicals Incorporated |
| GCLX | Gold Coast Limited |
| GCLZ | Global Chassis Leasing Incorporated |
| GCMX | Gold Coast Chapter - National Railway Historical Society Incorporated |
| GCOX | Gold Coast Railroad Museum Incorporated |
| GCPU | Genstar (Burlington Northern and Santa Fe Railway Company) |
| GCPX | Georgia Gulf Corporation PVC Division |
| GCRX | Grand Canyon Railway Incorporated |
| GCSR | Gulf Colorado and San Saba Railway |
| GCSU | G.C.S. Containers Service SA |
| GCTU | Gulf Container Lines |
| GCTX | General Chemical Corporation |
| GCW | Garden City Western Railway Company |
| GCX | Honeywell International Incorporated |
| GDCX | General American Marks Company |
| GDJX | Grimmel Industries |
| GEAX | Trinity Rail Management Incorporated |
| GECX | General Electric Company Transportation Systems Business Operations |
| GECZ | GE Captial Container Finance Corporation |
| GEGX | GE Gas Turbine |
| GELX | Grain Marketing LC |
| GEMX | General Electric Rail Services Corporation |
| GENX | General Electric Rail Services Corporation |
| GEOX | GEO Specialty Chemicals |
| GEPX | Trinity Rail Management Incorporated |
| GETX | General American Marks Company |
| GETZ | Transport International Pool Incorporated |
| GEX | General Electric Company |
| GEXR | Goderich-Exeter Railway Company Limited (Rail America) |
| GF | Norfolk Southern Railway Company |
| GFAX | Gordon Fay Associates Incorporated |
| GFC | Grand Falls Central Railway Company Limited |
| GFCX | Glens Falls Lehigh Cement Company |
| GFCZ | General Foods Corporation |
| GFLX | Greenfield Logistics LLC |
| GFR | Grand Forks Railway Company |
| GFRR | Georgia and Florida Railroad Company |
| GFSX | General American Marks Company |
| GGCX | Georgia Gulf Corporation-Plaquemine Division |
| GGIX | Garvey International Garvey Grain Division |
| GGMX | Golden Gate Railroad Museum Incorporated |
| GGPX | General American Marks Company |
| GGS | Georgia Great Southern Division South Carolina CentralRailroad |
| GHBX | G. Heileman Brewing Company Incorporated |
| GHRD | Green Hills Rural Development (Chillicothe-Brunswick Rail Maintenance Authority) |
| GIEX | General American Marks Company |
| GIHX | Gifford Hill and Company (Cornerstone C and M Incorporated) |
| GILX | Gilman Paper Company |
| GIMX | General American Marks Company |
| GITM | Golden Isles Terminal Railroad Incorporated |
| GKLX | Gold Kist Incorporated |
| GLBZ | Trac Lease Incorporated |
| GLCU | Flex-Van Leasing Incorporated |
| GLCX | Great Lakes Carbon Corporation |
| GLKU | Great Lakes Chemical Corporation |
| GLKX | Great Lakes Chemical Corporation |
| GLNX | GLNX Corporation |
| GLRX | Georgetown Loop Railroad Incorporated |
| GLSR | Gloster Southern Railroad Corporation |
| GLSX | Glacier State Distribution Services Incorporated |
| GMGX | M and G Polymers USA LLC |
| GMHX | General American Marks Company |
| GMIX | Chicago Freight Car Leasing Company |
| GMO | Illinois Central Railroad Company (CN) |
| GMRC | Green Mountain Railroad Corporation |
| GMRY | Great Miami and Scioto Railway Company |
| GMSR | Kansas City Southern Railway Company |
| GN | Burlington Northern and Santa Fe Railway Company |
| GNA | Kansas City Southern Railway Company |
| GNAX | Holnam Incorporated |
| GNBC | Grainbelt Corporation |
| GNCU | Gallatin National Company |
| GNFX | City of Gainesville Florida |
| GNLX | Georgia Industrial Leasing Company |
| GNRR | Georgia Northeastern Railroad Company |
| GNWR | Genesee and Wyoming Railroad Company |
| GOCU | Greenfield Overseas Container Incorporated |
| GOCX | Chevron Phillips Chemical Company LP |
| GOHX | General American Marks Company |
| GONX | TTX Company |
| GOT | Toronto Area Transit Operating Authority |
| GOTU | Gulf Overseas Towing |
| GPBX | Georgia-Pacific Corporation |
| GPCX | Georgia-Pacific Corporation |
| GPDX | General American Marks Company |
| GPFX | General American Marks Company |
| GPIX | Sunbelt Cement |
| GPLU | Management Control and Maintenance SA |
| GPLX | General American Marks Company |
| GPMX | Georgia-Pacific Corporation - Mid Continent Wood Products Manufacturing Division |
| GPPX | Georgia-Pacific Corporation |
| GPSX | Georgia-Pacific Corporation Eastern Wood Products Manufacturing Division |
| GPUX | GPU Service Corporation |
| GR | Grand Rapids Eastern Railroad Incorporated |
| GRCX | Granite Rock Company |
| GRDX | Grand River Dam Authority |
| GREX | Georgetown Rail Equipment Company |
| GRFF | Georgia and Florida Railroad Company |
| GRIV | Gauley River Railroad LLC |
| GRMX | Gopher State Railway Museum |
| GRN | Carolina Piedmont Division South Carolina Central Railroad Company |
| GRNR | Grand River Railway Company |
| GROI | Genesee Rail-One Incorporated |
| GROX | First Union Rail |
| GRPX | CIT Group/Capital Finance Group |
| GRR | Georgetown Railroad Company |
| GRRX | Wampum Hardware |
| GRSX | Gunderson Rail Services |
| GRTX | Savage-Tolk Energy Services |
| GRWR | Great Walton Railroad Company |
| GRYX | Transmatrix Incorporated |
| GSAX | Granite State Concrete Company |
| GSCU | Eurotainer US Incorporated |
| GSCX | General American Marks Company |
| GSF | Georgia Southern and Florida Railway Company |
| GSIX | Williams Energy Ventures Incorporated |
| GSM | Great Smokey Mountains Railway |
| GSNX | Helm Financial Corporation |
| GSOR | Indiana Hi-Rail Corporation |
| GSRX | Golden Spike Railroad Services |
| GSSX | Gopher State Scrap and Metal |
| GSTU | Genstar Container Corporation |
| GSWR | Georgia Southwestern Division South Carolina Centrao Railroad Company |
| GTA | Grand Trunk Western Railroad Incorporated (CN) |
| GTAX | Harvest States Cooperative |
| GTEU | General Transport Equipment Co Inc |
| GTIS | Guilford Transportation Industries |
| GTIZ | G. T. Intermodal U.SA |
| GTLZ | G. T. Leasing |
| GTPZ | TIT Services |
| GTR | Great River Railroad; (Rosedale-Bolivar County Port Commission) |
| GTRA | Golden Triangle Railroad |
| GTTX | TTX Company |
| GTW | Grand Trunk Western Railroad Incorporated (CN) |
| GTWQ | Grand Trunk Western Railroad Incorporated (CN) |
| GTZZ | GT Trucking Incorporated |
| GU | Grafton and Upton Railroad Company |
| GUAX | Georgia Power Company |
| GUEX | General American Marks Company |
| GURZ | Grafton and Upton Railroad Company |
| GVDX | Oxy Vinyls LP |
| GVSR | Galveston Railroad LP |
| GWAX | Railroad Salvage and Restoration Incorporated |
| GWCX | Greenway Centre LLC |
| GWIX | GWI Leasing Corporation |
| GWR | Great Western Railway Company |
| GWRC | Georgia Woodlands Railroad Company |
| GWRS | Great Western Railway Company |
| GWSR | Great Western Railway Company |
| GWSW | GWI Switching Services LP |
| GWWE | Gateway Eastern Railway Company |
| GWWR | Gateway Western Railway |
| GYLX | Gaylord Container Corp |
| HABX | Habco International Incorporated |
| HALX | Holland American Line - Westours Incorporated |
| HAMU | Costa Line |
| HANU | Hansa Line |
| HANX | L. Hansen's Forwarding |
| HAPX | Helm-Atlantic Leasing LLP |
| HARX | General Electric Rail Services Corporation |
| HATU | H A T Enterprises Incorporated |
| HATX | Helm Financial Corporation |
| HATZ | H A T Enterprises Incorporated |
| HB | Hampton and Branchville Railroad Company Incorporated |
| HBGX | HBG Enterprises of Tampa Incorporated |
| HBL | Harbor Belt Line |
| HBRY | Hudson Bay Railway Company (OmniTRAX) |
| HBT | Houston Belt and Terminal Railway |
| HBWX | Georgia Power Company |
| HCBX | Chevron Phillips Chemical Company LP |
| HCDU | ER Nahrungsmittel Ges.MBH and Company KG. |
| HCGX | North American Salt Company |
| HCIU | Steam Packet Yard |
| HCLX | Basell Canada Incorporated |
| HCMX | Harnischfeger CCorporation |
| HCPX | Occidental Chemical Corporation |
| HCRR | Honey Creek Railroad Incorporated |
| HCRY | Huron Central Railway (GWI) |
| HCSX | Helm Chesapeake LLP |
| HCTX | Martin Marietta Corporation |
| HDMU | Hyundai Merchant Marine (America) Incorporated |
| HDMZ | Hyundai Merchant Marine (America) Incorporated |
| HDSX | RailAmerica Equipment Corporation |
| HE | Hollis and Eastern Railroad Company |
| HECX | Hoosier Energy REC Incorporated |
| HELX | Helm Financial Corporation |
| HENU | Provincial Trailer Rentals |
| HENZ | Provincial Trailer Rentals |
| HEPX | Hydro One (Ontario) |
| HEQX | Helm Financial Corporation |
| HERX | General Electric Rail Services Corporation |
| HESR | Huron and Eastern Railway Company |
| HESU | Heritage Environmental Services Incorporated |
| HESX | Heritage Environmental Services |
| HESZ | Heritage Environmental Services Incorporated |
| HGPX | Harrison Gypsum Company |
| HHEX | H and H Engineering Construction Incorporated |
| HHHX | Public Service Company of Colorado |
| HHLX | H and H Locomotive Leasing Incorporated |
| HIIX | TTX Company - Hamburg Division |
| HINX | Heritage Inks International Corporation |
| HIPX | Reliant Energy HL and P |
| HJBX | H.J. Baker and Brothers Incorporated |
| HJCU | HANJIN Container Lines Limited |
| HJCZ | HANJIN Container Lines Limited |
| HJVX | Helm Financial Corporation |
| HKGU | Hong Kong Island |
| HKIU | Hong Kong Islands Line America SA |
| HKPU | Hong Kong Islands Line |
| HKTU | Hong Kong Islands Line America SA |
| HKUU | Hong Kong Islands Line America SA |
| HKZZ | Hong Kong Islands Line America SA |
| HLBZ | Hill Brothers Transportation |
| HLCU | Hapag-Lloyd A G |
| HLCX | Helm Financial Corporation |
| HLEX | Hunstman Polymers Corporation |
| HLGX | Helm Financial Corporation |
| HLLX | Helm Financial Corporation |
| HLMX | Helm Financial Corporation |
| HLSC | Hampton Railway Incorporated |
| HLTX | BP AMOCO Chemical Company Chemical Division |
| HMAX | Huntsman Corporation |
| HMCR | Huntsville and Madison County Railroad Authority |
| HMCX | HoltraChem Manufacturing Company LLC |
| HMFX | Florida Rock Industries Incorporated |
| HMIX | Henkels and McCoy |
| HMJX | Helm Financial Corporation |
| HMR | Hoboken Manufacturers |
| HMWX | Heckett MultiServ |
| HN | Hutchinson and Northern Railway Company |
| HNPU | Navale Et Commerciale Havraise Penninsulaire |
| HOCU | Hoegh Container Lines |
| HOEU | Hoechst Aktiengesellschaft |
| HOG | Heart of Georgia Railroad |
| HOKX | Occidental Chemical Corporation |
| HOMX | PLM International Incorporated |
| HONX | Honeymead Products Company (Division of Harvest States Cooperatives) |
| HOS | Hoosier Southern Railroad |
| HOWZ | Flex-Van Leasing Incorporated |
| HOYU | Hoyer GMBH Internationale |
| HPAX | International Paper Company |
| HPCX | Hercules Incorporated |
| HPIX | Besell USA Incorporated |
| HPJX | Helm-Pacific Leasing |
| HPLX | Exxon Mobil Corporation |
| HPPX | Huntsman Polypropylene Corporation |
| HPTD | High Point Thomasville and Denton Railroad |
| HPTU | Highway Pipeline |
| HRCX | Heritage Railcar |
| HRDX | Silver Star Enterprises Incorporated |
| HREX | Heavy Railroad Excavations Incorporated |
| HRLU | Hudson Railway Equipment Company (Division of Hudson Leasing Company) |
| HRLZ | Hudson Railway Equipment Company |
| HRRC | Housatonic Railroad Company |
| HRRX | On-Track Railcar Services Incorporated |
| HRS | Holidaysburg and Roaring Spring Railroad Company |
| HRSX | Harbor Rail Services of California Incorporated |
| HRT | Hartwell Railroad Company |
| HS | H and S Railroad Company Incorporated |
| HSCX | Steel Wheels Limited |
| HSFZ | Atchison Topeak and Santa Fe Railway |
| HSIX | Housing Starts Incorporated |
| HSLU | Haulage Services Limited |
| HSRR | Hardin Southern Railroad Incorporated |
| HSRZ | H and S Railroad Company Incorporated |
| HTCX | General Electric Rail Services Corporation |
| HTMU | Hansen and Tidemann Incorporated |
| HTSU | High Tech Transport Limited |
| HTSX | Herzog Transit Services Incorporated |
| HTTX | TTX Company |
| HTW | Hoosac Tunnel and Wilmington |
| HUBA | Burlington Northern and Santa Fe Railway Company |
| HUDX | Hudson Technologies Incorporated |
| HUKU | Huktra (UK) Limited |
| HUTX | Hutchinson Transportation Company |
| HWCX | Halliburton Company |
| HWPX | Hiram Walker and Sons Incorporated |
| HYDX | Praxair Incorporated |
| HYWX | Georgia Power Company |
| HZGX | Herzog Contracting Corporation |
| IAIS | Iowa Interstate Railroad Limited |
| IALU | Japan Line Limited |
| IANR | Iowa Northern Railway |
| IAPX | Air Liquide America Corporation |
| IASZ | Iowa Interstate Railroad Incorporated |
| IATR | Iowa Traction Railroad Company |
| IBCX | Indiana Boxcar Corporation |
| IBNU | Interpool Container Pty Limited |
| IBPX | Trinity Industries Leasing Company |
| IBT | International Bridge and Terminal Company |
| IBYU | Tuscola and Saginaw Bay Railway Company |
| IC | Illinois Central Railroad Company (CN) |
| ICCU | ICCU Containers Incorporated |
| ICCX | International Catalyst Corporation |
| ICE | Iowa Chicago and Eastern Railroad Corporation |
| ICEU | Inter-Continental Equipment Incorporated |
| ICEZ | GATX Capital Corporation |
| ICG | Illinois Central Railroad Company (CN) |
| ICGU | Illinois Central Railroad Company (CN) |
| ICGZ | Illinois Central Railroad Company (CN) |
| ICHU | Ingetra AG |
| ICIU | Intermodal Containers Incorporated |
| ICIX | ICI Americas Incorporated |
| ICIZ | Intermodal Containers Incorporated |
| ICLU | International Container Leasing |
| ICLX | Intercoastal Leasing Incorporated |
| ICLZ | International Chassis Leasing Incorporated |
| ICMU | Interox America |
| ICMX | Cargill Dry Corn Ingredients Incorporated |
| ICOU | Japan Line Limited |
| ICPU | Intermodal Container Pool Inc |
| ICPZ | Intermodal Container Pool Inc |
| ICRK | Indian Creek Railroad Company |
| ICRU | Ingetra AG |
| ICRX | Island Creek Corporation |
| ICRZ | Illinois Central Railroad Company (CN) |
| ICSU | Transamerica Leasing Incorporated |
| ICSZ | Transamerica Leasing Incorporated (Union Pacific) |
| IDCU | Ideal Container |
| IDOX | US Deptartment of Energy Idaho Operations Office |
| IDSZ | Industrial Distribution Service Incorporated |
| IEAU | Intermodal Equipment Associates |
| IELZ | Iran Express Lines |
| IESX | Alliant Energy |
| IFBX | General Electric Rail Services Corporation |
| IFCX | Interstate Foods Corporation |
| IFLU | Interflow |
| IFSU | Interlink Freight Systems |
| IFWZ | Independent Freightway Incorporated |
| IGPX | Industrial Steam Products |
| IHAU | Ihora Chemical Industrial |
| IHB | Indiana Harbor Belt Railroad Company |
| IHCU | CSD Assignment-temporary |
| IHRC | Indiana Hi-Rail Corporation |
| IHSX | Western Vancouver Island Heritage Society (Alberni Pacific Railway) |
| IICZ | Illinois Central Railroad Company (CN) |
| IIIU | III Transportation |
| IIIZ | III Transportation |
| IILU | Independent Container Line |
| IILZ | Independent Container Line |
| IIRZ | III Transportation |
| IKCU | Interpool |
| IKKU | ICCU Containers Incorporated |
| IKSU | Transamerica Leasing Incorporated |
| ILDX | General Electric Company - Lighting Business Group |
| ILMU | Flow Line Transport |
| ILSX | Independent Locomotive Service |
| ILTU | International Liquid Transport Company Bv |
| ILW | Illinois Western Railroad |
| IMCX | IMC Global Operations Incorporated |
| IMEX | Indiana and Michigan Electric Company |
| IMMX | Industrial Minera Mexico SA |
| IMRL | Iowa Chicago and Eastern Railroad Corporation |
| IMRR | Illinois and Midland Railroad |
| IMSX | International Mill Service |
| IMSZ | Intermodal Systems Incorporated |
| IMTX | Ag Processing Incorporated |
| IMXZ | Intermodal Express Incorporated |
| IN | Indiana Northeastern Railroad Company |
| INCU | Intercontinental Transport B.V. (ICT) |
| INCX | INCO Limited |
| INCZ | Intercontinental Transport B.V. (ICT) |
| INDU | Dorothea Marine Entreprise and Management |
| INDX | Indelpro SA de CV |
| INFX | Infineum USA Incorporated |
| INGX | General Electric Rail Services Corporation |
| INKU | Interpool Limited |
| INLX | Incoal Company |
| INOH | Indiana and Ohio Railroad Incorporated |
| INOX | Indiana and Ohio Rail Corporation |
| INPR | Idaho Northern and Pacific Railroad |
| INRD | Indiana Rail Road Company |
| INSU | Intersub Services |
| INT | Norfolk Southern Railway Company |
| INTU | Interpool Container Pty Limited |
| INTZ | Interpool Limited |
| IOCR | Indiana and Ohio Central Railroad |
| IOCX | Rail Enterprises Incorporated |
| IOLU | Textainer Equipment Management (US) Limited |
| IOPX | MidAmerican Energy Company |
| IORY | Indiana and Ohio Railway Company |
| IPCU | Independent Container Line |
| IPCX | International Paper Company |
| IPEX | Indeck Power Equipment Company |
| IPLX | Illinois Power Company |
| IPOX | A and R Leasing LLP |
| IPPX | Intermountain Power Agency |
| IPSX | General American Marks Company |
| IPWX | Alliant Energy |
| IQIX | Industria Quimica Del letmo SA de CV |
| IR | Illinois RailNet Incorporated |
| IREX | IRECO Incorporated |
| IRLX | Western Railroad Supply Incorporated |
| IRMZ | III Transportation |
| IRRS | International Rail Road Systems Incorporated |
| IRSZ | Interpool/Rail Services Limited |
| ISCU | I.S.C. Chemicals Limited |
| ISCX | ISC Incorporated |
| ISIZ | Intermodal Services Incorporated |
| ISLU | Islandia Limited |
| ISR | Iowa Southern Railroad Company |
| ISRR | Indiana Southern Railroad Company Incorporated |
| ISSR | ISS Rail Incorporated |
| ISSU | Iceland Steamship Co Limited |
| ISW | Indiana Southwestern Railway Company |
| ITAU | Italian Lines |
| ITAX | Illinois Transit Assembly Incorporated |
| ITB | Island Tug and Barge |
| ITC | Norfolk Southern Railway Company |
| ITCU | Intercontainer |
| ITCX | International Technologies Corporation |
| ITDX | SULCOM Incorporated |
| ITEU | Compagnia Italiana Investimenti Alternativi |
| ITGX | ITG Incorporated |
| ITIU | International Transchem Incorporated |
| ITIX | Intermodal Technologies Incorporated |
| ITKU | Intertank Limited |
| ITLU | Itel Containers International Corporation |
| ITLX | General Electric Rail Services Corporation |
| ITRU | Itel Containers International Corporation |
| ITSU | Iberhansaetic Transport System |
| ITSZ | International Transportation Service Incorporated |
| ITTX | TTX Company |
| ITXX | Tiaxcalteca de Industrias SA de CV |
| IU | Indianapolis Union |
| IVLU | Ivarans Rederei A/S |
| IXEU | Interox Quimica SA |
| IXWU | Interox Chemicals Limited |
| LA | Kansas City Southern Railway Company |
| LACX | Goodyear Tire and Rubber Company |
| LAFX | Lafarge Corporation |
| LAHX | Transportation Equipment Incorporated |
| LAJ | Los Angeles Junction Railway |
| LAKX | City of Lakeland |
| LAL | Livonia Avon and Lakeville Railroad Corporation |
| LANO | Penn Eastern Rail Lines Incorporated |
| LANU | CATU Containers SA |
| LAPT | Los Angeles Union Passenger Terminal |
| LARU | Lanan Incorporated |
| LBFX | L.B. Foster Company |
| LBR | Lowville and Beaver River Railroad Company |
| LBWX | Technical Propellants Incorporated |
| LC | Lancaster and Chester Railway Company |
| LCCX | Liquid Carbonic Corporation |
| LCEX | Lone Star Industries Incorporated |
| LCGX | Cargill Incorporated CGD Division |
| LCHX | LCP Transportation Incorporated |
| LCIX | Praxair Incorporated |
| LCLX | Ledcor Communications Limited |
| LCOX | L A Colo and Sons Incorporated |
| LCPX | General American Marks Company |
| LCR | Lake County Railroad |
| LCRX | Lower Colorado River Authority |
| LCSX | Laclede Steel Company |
| LCWX | LCP Chemicals-West Virginia Incorporated |
| LDAX | Louisiana Agricultural Finance Authority |
| LDCX | Louis Dreyfus Corporation |
| LDRR | Louisiana and Delta Railroad Incorporated |
| LDSX | Lambton Diesel Specialists Incorporated |
| LEFX | Greenville Leasing Company |
| LEN | Lake Erie and Northern Railway Company |
| LEOX | Golden Foods Incorporated |
| LER | Logansport and Eel River Short-Line Company Incorporated |
| LERX | PSI Energy Incorporated |
| LEVX | Level Energy Incorporated |
| LEWU | Norman Lewis Tankers BV |
| LFCD | Linea Coahuila Durango SA de CV |
| LFFZ | Burlington Northern and Santa Fe Railway Company |
| LGCX | La Prairie Group Contractors (Alberta) Limited |
| LGEU | CATU Containers SA |
| LGEX | L.G. Everist Incorporated |
| LGMX | Logistics Management Systems |
| LGNZ | Burlington Northern and Santa Fe Railway Company |
| LGSX | MidAmerican Energy Company |
| LGTU | Liquid and Gas Transport Incorporated |
| LGTX | Logistechs Incorporated |
| LHFX | Lehigh Heavy Forge Corporation |
| LHR | Norfolk Southern Railway Company |
| LHRR | Longhorn Railroad |
| LHTX | Larsen Farms |
| LI | Long Island Rail Road Company |
| LIBU | Lib Leasing |
| LINC | Lewis and Clark Railway Company |
| LIRC | Louisville and Indiana Railroad Company |
| LITX | Lite Industries Incorporated |
| LKRR | Little Kanawha River Rail Incorporated |
| LKWR | Lackland Western Railroad Company |
| LLCX | LLCX Incorporated |
| LLIX | Services Unlimited |
| LLLX | Louisiana Leasing Limited Of Illinois |
| LLPX | Locomotive Leasing Partners LLC |
| LM | Union Pacific Railroad Company |
| LMCU | World Container Leasing Incorporated |
| LMIC | Lake Michigan and Indiana Railroad Company |
| LMIX | LORAM Maintenance of Way Incorporated |
| LMSX | Locomotive Management Services |
| LMTX | Chartrand's Tank Car Service Incorporated |
| LMWX | MHC Incorporated Wholly Owned Subsidiary of Conagra Incorporated |
| LN | CSX Transportation Incorporated |
| LNAC | H and S Railroad Company |
| LNAL | Louisville New Albany and Corydon Railroad |
| LNTX | Alliant Energy |
| LNVT | Landisville Terminal and Transfer Company |
| LNW | Louisiana and North West Railroad Company |
| LNWX | Locomotives Northwest Limited |
| LOCX | Mobile Locomotive Services Incorporated |
| LOGU | Societe-Logemafer |
| LOGX | Linden Leasing Incorporated |
| LORU | Renzlor Securities Corporation |
| LOSX | Locomotive Specialists Incorporated |
| LOVX | American Colloid Company |
| LOWU | Management Control and Maintenance SA |
| LPIU | Leasing Partners Int. B.V. |
| LPN | Longview Portland and Northern Railway Company |
| LPRU | Losinjska Plovidba Mali Losing |
| LRAX | Latinoamerican Railroad Association Incorporated |
| LRCX | Livingston Rebuild Center Incorporated |
| LRDX | MidAmerican Energy Company |
| LRIX | Lake Superior Eastern Rail Industries |
| LRLX | General Electric Rail Services Corporation |
| LRMX | Logistics Resource Management |
| LRPA | Little Rock Port Railroad |
| LRS | Laurinburg and Southern Railroad Co |
| LRWN | Little Rock and Western Railway LP |
| LRWY | Lackawanna Railway Incorporated |
| LS | Luzerne and Susquehanna Railway Company |
| LSBZ | Chicago Rail Link |
| LSCX | D-H Investors (Relam Auditing Services) |
| LSEU | One Way Lease Incorporated |
| LSFZ | Burlington Northern and Santa Fe Railway Company |
| LSI | Lake Superior and Ishpeming Railroad Company |
| LSIU | L.S. Intertank |
| LSIX | ADM Transportation |
| LSMX | Progress Rail Services Corporation |
| LSRC | Lake State Railway Company |
| LSRR | Lone Star Railroad Incorporated |
| LSRX | Lake Superior Railroad Museum |
| LT | Lake Terminal Railroad Company |
| LTCR | Leelanau Transit Company |
| LTCX | Praxair Incorporated |
| LTEX | L.H.A.G.S. Incorporated (Larry's Truck and Electric Service) |
| LTIU | Lloyd Triestine Di Navigazione S.P.A. |
| LTLZ | Burlington Northern and Santa Fe Railway Company |
| LTTX | TTX Company |
| LTVX | LTV Steel Company |
| LUBX | Philip Metals Incorporated |
| LUCX | Services Unlimited |
| LUNX | General Electric Rail Services Corporation |
| LUSX | LUSCAR Limited |
| LUUX | Lux Internation Corporation |
| LUX | Tosco Corporation |
| LV | Norfolk Southern Railway Company |
| LVAL | Lackawanna Valley Railroad Corporation |
| LVRC | Lamoille Valley Railroad Company |
| LVRR | Lycoming Valley Railroad Company |
| LW | Louisville and Wadley Railway Company |
| LWAX | Laidlaw Environmental Services |
| LWIX | L and W Entertainment Company Incorporated (Milk and Cookies Railroad) |
| LXOH | Lexington and Ohio Railroad Company |
| LXVR | Luxapalila Valley Railroad Incorporated |
| LYKU | Lykes Brothers Steamship Company Incorporated |
| LYKZ | Lykes Brothers Steamship Company Incorporated |
| LYNX | Round Butte Products |
| MAA | Magma Arizona Railroad Company |
| MACX | Mac Acquisitions. LP |
| MADU | Magnum Speditionsgelleshaft GMBH |
| MAEU | Maersk Lines |
| MAIX | Macon Iron and Paper Stock Incorporated |
| MAJU | Malaysian International Shipping Corporation |
| MALX | Mid-America Locomotive and Car Repair Incorporated |
| MALZ | American President Lines Incorporated |
| MANX | Williams Energy Ventures Incorporated |
| MAPX | Williams Energy Ventures Incorporated |
| MARX | MidAmerican Energy Corporation |
| MARZ | MARTRAC |
| MATU | Matson Navigation Company |
| MATZ | Matson Navigation Company |
| MAW | Maumee and Western Railroad Corporation |
| MAXU | Maxu Containers Limited |
| MAXX | MidAmerican Energy Company |
| MAYW | Maywood and Sugar Creek |
| MB | M and B Railroad LLC |
| MBCX | M.B.C.X. Leasing LLC |
| MBIX | Morse Brothers Incorporated |
| MBKX | MRC Rail Services LLC |
| MBLX | Exxon Mobil Corporation |
| MBPX | MacMillan-Bloedell Incorporated |
| MBSX | Mid-South Bulk Services Incorporated |
| MBTX | Massachusetts Bay Transportation Authority |
| MCCX | Mt. Vernon Transfer Terminal LLC |
| MCDX | Sunbelt Cement Incorporated |
| MCER | Massachusetts Central Railroad Corporation |
| MCEU | Massachusetts Central Railroad Corporation |
| MCEZ | Massachusetts Central Railroad Corporation |
| MCHX | Trinity Rail Management Incorporated |
| MCLR | McLaughlin Line Railroad |
| MCMU | Management Control and Maintenance SA |
| MCMX | M C Rail Services Limited |
| MCPX | Solutia Incorporated |
| MCR | McCloud Railway Company |
| MCRR | Monongahela Connecting RR Company |
| MCRX | Marcus Rail Transport LLC |
| MCSA | Moscow Camden and San Augustine Railroad |
| MCSU | China Ocean Shipping Company |
| MCTA | Minnesota Central Railroad Company |
| MCTX | Modern Continental Construction Company Limited |
| MCVX | Massuchusetts Call/Volunteer Firefighters Association |
| MDCX | Mexicana De Cobre SA de CV |
| MDDE | Maryland and Delaware Railroad |
| MDDX | Old Line Holding Company Incorporated |
| MDIX | Modern Dispersions Incorporated |
| MDKX | Mandak Metal Processors Division of Gardau MRM Steel Incorporated |
| MDLR | Midland Terminal Company |
| MDR | Kansas City Southern Railway Company |
| MDS | Meridian Southern Railway LLC |
| MDSZ | Medspan Shipping Service Incorporated |
| MDTX | Southern Region Industrial Realty Incorporated |
| MDW | Minnesota Dakota and Western Railway Company |
| MDWU | Minnesota Dakota and Western Railway Company |
| MDWZ | Minnesota Dakota and Western Railway Company |
| ME | Morristown and Erie Railway Incorporated |
| MEC | Maine Central Railroad Company |
| MECX | Trinity Rail Management Incorporated |
| MEFX | MexFresh LLC |
| MEFZ | MexFresh LLC |
| MELX | Sunbelt Cement Incorporated |
| MEPX | McGraw-Edison Company |
| MERX | Merco a joint venture |
| MESX | Mears/CPG Incorporated |
| MET | Modesto and Empire Traction Company |
| METW | Municipality of East Troy Wisconsin |
| METX | Northeast Illinois Regional Commuter Railroad Corporation |
| MFCX | First Union Rail |
| MFFX | M4 Holdings Limited |
| MGA | Norfolk Southern Railway Company |
| MGGU | Marcevaggi S.P.A. |
| MGMX | J and J Partnership |
| MGRI | MG Rail Incorporated |
| MGSX | CF Martin Sulphur LP |
| MH | Mt. Hood Railroad Company |
| MHAX | US Dept of Interior-Bureau of Mines Helium Field Operations |
| MHFX | MHF Logistical Solutions Incorporated |
| MHQU | Military Sealift Command HQ Washington DC |
| MHQZ | Military Sealift Command |
| MHRX | Mile-High Railcar Services Incorporated |
| MHWA | Mohawk Adirondack and Northern Railroad Corporation |
| MI | Union Pacific Railroad Company |
| MIDH | Middletown and Hummelstown RR Company |
| MIDX | MRC Rail Services LLC |
| MIEU | MI Engineering Limited |
| MILW | Soo Line Railroad (CPR) |
| MILX | General Electric Rail Services Corporation |
| MILZ | Soo Line Railroad (CPR) |
| MIMX | Minera Mexico Internacional Incorporated |
| MINU | China Ocean Shipping Company |
| MIPX | Millennium Petrochemicals Incorporated |
| MIRX | Regional Recycling LLC |
| MIS | Mississippi Central Railroad Corporation |
| MISS | Mississippian Railway Cooperative Incorporated |
| MISU | Malaysian International Shipping Corporation |
| MJ | Manufacturers Junction Railway Company |
| MJVU | Merco a joint venture |
| MKC | McKeesport Connecting Railroad Company |
| MKCX | Morrison Knudsen Corporation |
| MKFX | Century Rail Enterprises Incorporated |
| MKIX | Morrison Knudsen Corporation |
| MKT | Union Pacific Railroad Company |
| MKTT | Union Pacific Railroad Company |
| MKTZ | Missouri Pacific Railroad Company |
| MLCU | N.Y.K. Line |
| MLCX | American Refrigerator Transit Company |
| MLEX | Miles Incorporated |
| MLIX | Melbo Land and Investment Company |
| MLLX | Basell USA Incorporated |
| MLMX | Metal Management Incorporated |
| MLSX | Monsanto Company |
| MLUX | Solutia Incorporated |
| MMA | Montreal Maine and Atlantic Railway Limited |
| MMAX | Martin Marietta Corporation |
| MMBX | Master Builders Incorporated |
| MMCU | CIE Des Messageries Maritimes |
| MMCX | TransMatrix Incorporated |
| MMID | Maryland Midland Railway Incorporated |
| MMMU | Fesco Pacific Lines |
| MMMX | Minnesota Mining and Manufacturing (3M) |
| MMRR | Mid-Michigan Railroad Incorporated |
| MMRX | Double M Ranch Enterprises |
| MMXZ | Murphy Motor Express Incorporated |
| MNA | Missouri and Northern Arkansas Railroad Company |
| MNAX | C and S Directional Boring Incorporated |
| MNBR | M and B Railroad LLC |
| MNCW | Metro-North Commuter Railroad |
| MNCX | Minnesota Corn Processors Incorporated |
| MNJ | Middletown and New Jersey Railway Company Incorporated |
| MNLU | Malaysian International Shipping Corporation |
| MNLX | Exxon Mobil Corporation |
| MNN | Minnesota Northern Railroad Incorporated |
| MNNR | Minnesota Commercial Railway Company |
| MNPX | Morton International Incorporated |
| MNS | Soo Line Railroad (CPR) |
| MNTX | Minnesota Transportation Museum Incorporated |
| MNWX | Minnesota Department of Public Service Weights and Measures Division |
| MOBX | Exxon Mobil Corporation |
| MOC | Missouri Central Railroad Company |
| MOFX | Maxton Oil and Fertilizer Company |
| MOGX | C.W. Brooks Incorporated |
| MOHX | Solutia Incorporated |
| MOLU | Mitsui O.S.K. Lines Limited |
| MOLX | Internation Molasses Corporation Limited |
| MON | CSX Transportation Incorporated |
| MONX | Solutia Incorporated |
| MOPZ | Flexi-Van Leasing |
| MORZ | Mitsui O.S.K. Lines Limited |
| MOSX | Mosinee Paper Corporation |
| MOSZ | Mitsui O.S.K. Lines Limited |
| MOT | Marine Oil Transportation |
| MOTC | Montreal Tramways |
| MOTU | Monsanto |
| MOTX | Museum of Transportation |
| MOTZ | Mitsui O.S.K. Lines Limited |
| MOWX | Fortaleza Construction Company |
| MP | Union Pacific Railroad Company |
| MPA | York Railway Company |
| MPCX | Michels Pipeline Construction Incorporated |
| MPEX | Motivepower Industries Incorporated |
| MPIT | Union Pacific Railroad Company |
| MPIX | Motive Power Incorporated |
| MPLI | Minnesota Prairie Line Incorporated |
| MPLZ | Union Pacific Railroad Company |
| MPRX | Motive Power Equipment and Solutions Incorporated |
| MPSX | Missouri Public Service |
| MPTX | Procor Limited |
| MPU | Missouri Pacific Railroad Company |
| MPWX | Muscatine Power and Water |
| MPZ | Union Pacific Railroad Company |
| MQPX | Millennium Inorganic Chemicals Incorporated |
| MR | McCloud Railway Company |
| MRAX | Mineral Range Incorporated |
| MRCX | General Electric Rail Services Corporation |
| MRDX | MidAmerican Energy Company |
| MREX | Monad Railway Equipment Company |
| MRI | Mohall Railroad Incorporated |
| MRL | Montana RailLink Incorporated |
| MRMX | MRMX Leasing and Management LLC |
| MRR | Carolina Southern Railroad Company |
| MRS | Manufacturers Railway Company |
| MRSX | Mile-High Railcar Services Incorporated |
| MS | Michigan Shore Railroad Incorporated |
| MSAZ | National Motor Freight Traffic Assn |
| MSCI | Mississippi Central Railroad Company |
| MSCU | Mediterranean Shipping Company SA |
| MSCZ | Mediterranean Shipping Company |
| MSDR | Knoxville and Holston River Railroad Company Incorporated |
| MSE | Mississippi Export Railroad Company |
| MSIX | Morton International Incorporated |
| MSN | Meeker Southern Railroad |
| MSO | Michigan Southern Railroad Incorporated |
| MSPX | P4 Productions LLC |
| MSQU | Military Sealift Command Bayonne NJ |
| MSRC | Kansas City Southern Railway Company |
| MSRW | Mississippian Railway Cooperative Incorporated |
| MSTL | Union Pacific Railroad Company |
| MSTR | Massena Terminal Railroad Company |
| MSUU | USPCI Incorporated |
| MSV | Mississippi and Skuna Valley Railroad Company |
| MSWY | Minnesota Southern Railway Incorporated |
| MT | Mississippi and Tennessee RailNet Incorporated |
| MTAX | MTAX Corporation |
| MTCO | Macon Terminal Company |
| MTCX | Mallard Transportation Company |
| MTCZ | Mayflower Transit and Storage |
| MTDX | Midwest Transportation and Development Company |
| MTIU | Welfit Oddy (PTY) Limited |
| MTIZ | American Marine Industries |
| MTLU | Montgomery Tank Lines |
| MTLX | Metal Link International LLC |
| MTMU | March Limited |
| MTNX | Rocky Mountain Transportation Services |
| MTPX | Montana Power Company |
| MTR | Youngstown and Southern Railway Company |
| MTRX | TransMatrix Incorporated |
| MTSU | Marine Transport Service Incorporated |
| MTTX | TTX Company |
| MTZ | Mitsui O.S.K. Lines Limited |
| MUSC | Memphis Union Station Company |
| MVP | Missouri and Valley Park Railroad Company |
| MVRY | Mahoning Valley Railway Company |
| MVT | Mt. Vernon Terminal |
| MWAX | Martin Marietta Materials Incorporated |
| MWCL | Midwest Coal Handling Incorporated |
| MWCX | Midwest Railcar Corporation |
| MWHX | Markwest Hydrocarbon Partners Limited |
| MWLX | Midwest Locomotive Leasing and Sales Incorporated |
| MWLZ | Madrigal-Wan Hai Lines Corporation |
| MWMX | Golden Leasing |
| MWPX | Murco Wall Products Incorporated |
| MWRC | Mount Washington Railway Company |
| MWRL | Hillvista Investment Company (Molalla Western Railway) |
| MWRR | Montana Western Railway Company Incorporated |
| MWRX | Midwest Rail Holdings Incorporated |
| MWSX | General Electric Rail Services Corporation |
| MXLU | Mexican Line |
| MZIZ | Marko B Zanovich |
| NABU | Ecst Container Services and Trading GMBH. |
| NACR | Nashville and Ashland City Railroad |
| NACX | General Electric Rail Services Corporation |
| NADU | North American Domestic Container Corporation |
| NADX | General Electric Rail Services Corporation |
| NADZ | North American Domestic Container Corporation |
| NAFX | General Electric Rail Services Corporation |
| NAHX | General Electric Rail Services Corporation |
| NALU | Norwegian American Lines |
| NALZ | Neptune Orient Lines Limited |
| NAMX | NAMX Leasing Company |
| NAP | Narragansett Pier Railroad Company |
| NAPX | North American Plastics Incorporated |
| NAR | Canadian National Railway |
| NATU | Nasso SA |
| NATX | General Electric Rail Services Corporation |
| NATZ | North American Transportation |
| NAUG | Naugatuck Railroad Company |
| NAVE | Navajo Express Incorporated |
| NBCX | Nebraska Boiler Company |
| NBEC | New Brunswick East Coast Railway Company Incorporated |
| NBER | Nittany and Bald Eagle Railroad Company |
| NBIX | Bombardier Capital Rail Incorporated |
| NBNR | Nicolet Badger Northern Railroad |
| NBSR | New Brunswick Southern Railway Company Limited |
| NC | CSX Transportation Incorporated |
| NCAU | Colonial/Atl (Bermuda) Limited |
| NCAZ | NCA Leasing Company a division of G.H. Leasing Corporation |
| NCBU | Northbrook Container Leasing |
| NCDU | Burlington Northern and Santa Fe Railway Company |
| NCEU | XTRA Intermodal |
| NCEX | National Car Systems Incorporated |
| NCFX | General Electric Rail Services Corporation |
| NCGU | Genstar Corporation |
| NCHU | TIP Intermodal Services |
| NCHX | General Electric Rail Services Corporation |
| NCIR | New Castle Industrial Railroad Incorporated |
| NCIU | North American Container System (TRAC Lease Incorporated) |
| NCIX | Nova Chemicals Incorporated |
| NCJU | North American Container System (TRAC Lease Incorporated) |
| NCLU | China Ocean Shipping Company |
| NCLX | Nova Chemicals Incorporated |
| NCPR | North Carolina Ports Railway Commission |
| NCQU | TIP Intermodal Services |
| NCRC | Nebraska Central Railroad Company |
| NCRU | TIP Intermodal Services |
| NCRX | General Electric Rail Services Corporation |
| NCRY | Northern Central Railway |
| NCTU | Northbrook Container Leasing |
| NCTX | PLM International Incorporated |
| NCUU | TIP Intermodal Services |
| NCUX | Transport Capital Rail Partners LLC |
| NCVA | North Carolina and Virginia Railroad |
| NCWX | Northwest Container Services Incorporated |
| NCYR | Nash County Railroad Corporation |
| NDCR | N.D.C. Railroad Company |
| NDM | Ferrocarriles Nacionales de Mexico |
| NDMZ | National Railways of Mexico (Ferrocarriles Nacionales) |
| NDYX | First Union Rail |
| NEAX | Nemic Leasing Corporation |
| NECR | New England Central Railroad Incorporated |
| NECX | Mid-Am Equipment Incorporated |
| NEFX | Northeast Corridor Foundation |
| NEGS | New England Southern Railroad Company |
| NEKM | Northeast Kansas and Missouri Division Mid-Michigan Railroad Incorporated |
| NELU | New England Express Lines |
| NEMX | Ogden Martin Systems of Montgomery |
| NENE | Nebraska Northeastern Railway Company |
| NEPU | Neptune Orient Lines Limited |
| NERR | Nashville and Eastern Railroad |
| NERX | Transportation Management Services Incorporated |
| NERZ | General Electric Capital Corporation |
| NETU | Netumar Lines |
| NETX | Nemic Leasing Corporation |
| NFLZ | Flexi-Van Leasing |
| NFPX | Newaygo Forest Products Limited |
| NGOU | Scoa Incorporated |
| NGTX | Suburban Propane LP |
| NHCR | New Hampshire Central Railroad |
| NHN | New Hampshire Northcoast Corporation |
| NHRR | New Hope and Ivyland Rail Road |
| NHVT | New Hampshire and Vermont Railroad Company |
| NHVX | East Carolina Chapter National Railway Historical Society |
| NIAX | Niagara and Western New York Railroad Company Incorporated |
| NICD | Northern Indiana Commuter Transportation District |
| NICU | NIC Leasing Incorporated |
| NICX | Niagara and Western New York Railroad Company Incorporated |
| NIFX | General Electric Rail Services Corporation |
| NIHX | General Electric Rail Services Corporation |
| NIKX | N.I.K. Non-stock Marketing Cooperative |
| NIRX | General Electric Rail Services Corporation |
| NIWX | Northern Illinois and Wisconsin Railway Corporation |
| NJ | Delaware and Hudson Railway Company Incorporated |
| NJTR | NJ Transit Rail Operations |
| NKCR | Nebraska Kansas and Colorado RailNet |
| NKP | Norfolk Southern Railway Company |
| NLAX | National Aeronautics and Space Administration (NASA) |
| NLG | Kansas City Southern Railway Company |
| NLLX | Northern Line Layers Incorporated |
| NLPX | Perkins Motor Transport Incorporated |
| NLSU | Nautilus Leasing Services Incorporated |
| NLSX | National Starch and Chemical Company |
| NLSZ | Trans Ocean Chassis Corporation |
| NLTX | National Starch and Chemical Company Member ICI Group Vinamul Polymers |
| NMCX | National Machinery Company |
| NMGR | New Mexico Gateway Railroad LLC |
| NMLX | National Metal Corporation Limited |
| NN | Northern Nevada Railroad Corporation |
| NNIU | Nautica Line |
| NNPU | Nigerian National Petroleum Corporation |
| NNSX | Newport News Shipbuilding and Dry Dock Company |
| NNYX | National New York Central Railroad Museum |
| NOFU | Nodfos |
| NOGC | New Orleans and Gulf Coast Railway Company Incorporated |
| NOKL | Northwestern Oklahoma Railroad Co |
| NOKZ | First Union Rail |
| NOLR | New Orleans Lower Coast Railroad Incorporated |
| NOLU | Neptune Orient Lines Limited |
| NOLZ | Neptune Orient Lines Limited |
| NOPB | New Orleans Public Belt Railroad |
| NORX | Northern Indiana Public Service Company |
| NOSU | Neptune Orient Lines Limited |
| NOT | New Orleans Terminal |
| NOVX | Novell Polymers Incorporated |
| NOW | Northern Ohio and Western Railway Limited |
| NP | Burlington Northern and Santa Fe Railway Company |
| NPB | Norfolk and Portsmouth Belt Line Railroad Company |
| NPCX | Equistar Chemicals LP |
| NPIX | Chem-Nuclear Systems LLC |
| NPPX | Nebraska Public Power District |
| NPR | Northern Plains Railroad Incorporated |
| NPRX | Yakima Interurban Lines Association |
| NPSU | Nigel Parks Limited |
| NPT | Portland (Oregon) Terminal Railroad. Company |
| NPTU | Neptune Leasing Incorporated |
| NPTX | Newport Steel Corporation |
| NRBX | Fruit Growers Express Company |
| NRCU | Nedlloyd Road Cargo BV |
| NRCX | Northern Rail Car Corporation |
| NRDX | Nordic Warehouse Incorporated |
| NREX | National Railway Equipment Company |
| NRHX | National Railway Historical Society |
| NRI | Nebkota Railway Incorporated |
| NRIX | National Refrigerants Incorporated |
| NRLX | Bombardier Capital Rail Incorporated |
| NRPX | Northrop Corporation |
| NRR | Nobles Rock Railroad |
| NRSU | Nippon Riku-un Sangyo Company |
| NS | Norfolk Southern Railway Company |
| NSAX | National Steel Corporation |
| NSCX | National Steel Car Limited |
| NSFZ | Norfolk Southern Railway Company |
| NSHR | North Shore Railroad Company |
| NSL | St. Lawrence and Raquette River Railroad |
| NSLU | Norasia Services (HGK) Limited |
| NSLZ | Nestle Transportation Company |
| NSPX | Northern States Power Company |
| NSPZ | Norfolk Southern Railway Company |
| NSR | Newburgh and South Shore Railroad Company |
| NSSX | National Salvage and Service Corporation |
| NSTX | North Star Steel Company |
| NSXZ | Norfolk Southern Railway Company |
| NSZ | Norfolk Southern Railway Company |
| NTIU | Germanischer Lloyd |
| NTKX | VAE Nortrak North America Incorporated |
| NTLX | Nashtex Leasing Incorporated |
| NTNU | National Container Network Incorporated |
| NTR | Mississippi Central Railroad Company |
| NTRX | NTL Transportation Corporation |
| NTRY | Nimishillen and Tuscarawas LLC |
| NTTX | TTX Company |
| NUCX | Nucor Steel Crawfordsville - Division of Nucor Corporation |
| NUSU | Neptune Orient Lines Limited |
| NVCX | Nevada Cement Company |
| NVPX | Nevada Power Company |
| NVR | Bangor and Aroostook Railroad Company now MMA |
| NVRR | NAPA Valley Railroad Company |
| NW | Norfolk Southern Railway Company |
| NWAX | BP Global Special Products (America) Incorporated |
| NWCX | Northwest Container Services Incorporated |
| NWLX | Nationwide Locomotive Service LLC |
| NWR | Nashville and Western Railroad Corporation |
| NWTX | North West Timber Limited |
| NWTZ | NW Transport |
| NWZ | Norfolk Southern Railway Company |
| NXLZ | National Xpress Logistics Incorporated |
| NYA | New York and Atlantic Railway Company |
| NYAU | N.Y.K. Line |
| NYBU | N.Y.K. Line |
| NYC | CSX Transportation Incorporated |
| NYCH | New York Cross Harbor Railroad Terminal Corporation |
| NYCX | New York Central Lines LLC |
| NYGL | New York and Greenwood Lake Railway |
| NYKU | N.Y.K. Line |
| NYKZ | N.Y.K. Line |
| NYLE | New York and Lake Erie Railroad Company |
| NYLU | Japan Line Limited |
| NYOG | New York and Ogdensburg Railway Company Incorporated |
| NYSW | New York Susquehanna and Western Railway Corporation |
| NZCU | Shipping Corporation Of New Zealand Limited |
| NZSU | Shipping Corporation Of New Zealand Limited |
| PACX | Plasser American Corporation |
| PAE | Norfolk Southern Railway Company |
| PAIX | Pol-Tex Internation Division of Poly-America |
| PAL | Paducah and Louisville Railroad |
| PAM | Pittsburgh Allegheny and McKees Rocks Railroad Company |
| PAPX | Pennsylvania Pullmans Incorporated |
| PARX | Pan American Railway Company |
| PASX | Pacer International Incorporated (Pacer Stacktrain) |
| PATZ | Pacer Stacktrain |
| PBFX | IBP Incorporated |
| PBL | Philadelphia Belt Line Railroad Company |
| PBLU | Containers and Pressure Vessels Limited |
| PBMZ | Pattison Brothers Mississippi River Incorporated |
| PBNE | Philadelphia Bethlehem and New England Railroad Company |
| PBR | Patapsco and Back Rivers Railroad |
| PBRR | Pine Belt Southern Railroad Company |
| PBSZ | CSX Intermodal Incorporated |
| PBVR | Port Bienville Railroad |
| PC | Norfolk Southern Railway Company |
| PCAX | Pioneer Chlor Alkali Company Incorporated |
| PCC | Palouse River and Coulee City Railroad Incorporated |
| PCCX | Peabody Coal Company (Captive Service) |
| PCHX | Poole Chemical Incorporated |
| PCIX | ACF Industries Incorporated |
| PCJU | Puma Containers (Jersey) Limited |
| PCLU | Maritime Container Lines Limited |
| PCN | Point Comfort and Northern Railway |
| PCNZ | Flexi-Van Leasing Incorporated |
| PCSX | PLM International Incorporated |
| PCTX | Pioneer Cement Company of Texas |
| PCY | Pittsburgh Chartiers and Youghiogheny Railway Company |
| PDIZ | Produce Distributors Incorporated |
| PDQX | Castle Capital Corporation |
| PDRR | Pee Dee River Railroad Corporation |
| PE | Consolidated Rail Corporation |
| PECX | General Electric Rail Services Corporation |
| PELX | Premier Equipment Leasing Company |
| PELZ | Premier Equipment Leasing Incorporated |
| PENX | Penford Products Company |
| PEPX | Potomac Electric Power Company |
| PERU | Maxu Containers Limited |
| PERX | Perini Corporation |
| PF | Pioneer and Fayette Railroad Company |
| PFMX | Perdue Transportation Incorporated |
| PFRX | Parks Propane and Appliance Incorporated |
| PFSX | Private Fuel Storage LLC |
| PGCX | Peoples Gas System Incorporated |
| PGDX | General Electric Rail Services Corporation |
| PGE | BC Rail Limited |
| PGEX | Portland General Electric Company |
| PGHX | Trinity Rail Management Incorporated |
| PGLZ | Prudential Grace Lines |
| PGR | Progressive Rail Incorporated |
| PGRV | Pigeon River Railroad Company |
| PGRX | AmeriGas Propane LP |
| PGTX | Trinity Rail Management Incorporated |
| PHD | Port Huron and Detroit Railroad Company |
| PHL | Pacific Harbour Line Incorporated |
| PHNX | General American Marks Company |
| PHRU | Nigeria National Petroleum Corporation |
| PICK | Pickens Railway Company |
| PICU | Pickfords Removals Limited |
| PIFX | Pifer Tank Car Company |
| PIGZ | Tranfax-Division of Fresh Intermodal Transport Incorporated |
| PIR | Pittsburgh Industrial Railroad Incorporated |
| PIVX | Pivotal Enterprises Corporation |
| PJR | Port Jersey |
| PJRL | Penn Jersey Rail Lines Incorporated |
| PKHP | Pickens Railway Co-Honea Path Division |
| PKSX | Peter Kiewit Sons Incorporated |
| PLCX | General Electric Rail Services Corporation |
| PLE | Youngstown and Southern Railway Company |
| PLEX | PLM International Incorporated |
| PLHZ | Pole Star Transport Incorporated |
| PLIX | Polymont Plastics Corporation |
| PLIZ | P and L Intermodal Corporation |
| PLLU | Polynesia Line Limited |
| PLLZ | Polynesia Line Limited |
| PLMX | PLM International Incorporated |
| PLNZ | Penske Logistics |
| PLRU | Pic Leasing Corporation |
| PLRX | PIC Trans Incorporated |
| PLUX | Pulser Equipment Corporation |
| PLW | PL and W Railroad Incorporated |
| PLWX | General Electric Rail Services Corporation |
| PMAX | PMA Transportation Corporation |
| PMGX | Pacific Metal Limited |
| PMIX | Pittman Moore Incorporated |
| PMLX | Prairie Malt Limited |
| PMOX | Phillip Morris Incorporated |
| PNHX | General American Marks Company |
| PNR | Panhandle Northern Railroad Company |
| PNS | Philadelphia and Norfolk Steamship |
| PNSX | Chem-Nuclear Systems LLC |
| PNTX | Great Lakes Chemical Corporation Specialty Chemicals |
| PNW | Prescott and Northwestern Railroad |
| PNWR | Portland and Western Railroad Incorporated |
| PNWU | Pacific Northwest Equipment Incorporated |
| POAK | Port of Oakland Railway |
| POHC | Pittsburgh and Ohio Central Railroad |
| POLU | Polish Ocean Lines Gyndia American Lines |
| POLX | PolyOne Company |
| POLZ | Polish Ocean Lines |
| POTB | Port of Tillamook Bay Railroad |
| POTX | General American Marks Company |
| POV | Pittsburgh and Ohio Valley Railway |
| POVA | Pend Oreille Valley Railroad |
| POWX | Vinings Industries Incorporated |
| PPAX | PCS Phosphate Company Incorporated |
| PPGX | PPG Industries Incorporated |
| PPHX | PCS Phosphate Company |
| PPLX | Pennsylvania Power and Light Company |
| PPNX | PCS Phosphate Company |
| PPRX | Phillips Petroleum Company |
| PPSX | Pioneer Pipe and Supply Company Incorporated |
| PPTX | PCS Phosphate Company |
| PPU | Peoria and Pekin Union Railway Company |
| PQCX | PQ Corporation |
| PQX | PQ Corporation |
| PRAX | First Union Rail |
| PRBX | Trinity Rail Management Incorporated |
| PRCX | Prairie Coal Limited |
| PRDX | Pacific Rail Dismantling Services Incorporated |
| PREU | Prime Incorporated |
| PREX | Pioneer Railroad Equipment Company |
| PREZ | Prime Incorporated |
| PRGX | Cargill Incorporated |
| PRL | Penn Eastern Rail Lines Incorporated |
| PRLX | Private Rail Limited |
| PRMU | Puerto Rican Maritime Shipping Authority |
| PRMZ | Puerto Rican Maritime Shipping Authority |
| PROX | Procor Limited |
| PRPX | Pacific Railroad Preservation Association |
| PRR | Norfolk Southern Railway Company |
| PRRX | Pennsylvania Lines LLC |
| PRSX | Progress Rail Services Corporation |
| PRTD | Portland Traction Company |
| PRV | Pearl River Valley Railroad Company |
| PRWX | Railway Entertainment Services Limited |
| PRY | Pioneer Industrial Railway Company |
| PRYL | Port Royal Railroad |
| PS | Pittsburg and Shawmut Railroad Company |
| PSAP | Puget Sound and Pacific Railroad Company |
| PSAZ | Pacific Northwest Perishable Shippers Association |
| PSBU | Contship |
| PSCX | Public Service Company of Colorado |
| PSFL | Puget Sound Freight Lines |
| PSFZ | Flexi-Van Leasing Incorporated |
| PSIX | PSI Energy Incorporated |
| PSLL | Plymouth Short Line Limited |
| PSNU | Pacific Steam Navigation Company |
| PSOX | Puget Sound Power and Light Company |
| PSPX | Phillips Petroleum Company |
| PSR | Pittsburg and Shawmut Railroad Incorporated |
| PSTX | Joseph Transportation Incorporated |
| PT | Peninsula Terminal Company |
| PTC | Plainview Terminal Company |
| PTDX | ABB Power T and D Company Incorporated |
| PTEX | General Electric Rail Services Corporation |
| PTIZ | Parkway Transport Incorporated |
| PTLX | General Electric Rail Services Corporation |
| PTM | ST Rail System |
| PTMX | Pittsburgh Transportation Museum Society |
| PTOX | PTO Incorporated LLC |
| PTR | Port Terminal Railroad of South Carolina |
| PTRA | Port Terminal Railroad Association |
| PTRC | Portland Terminal Railroad Company (Oregon) |
| PTRR | Port Townsend Railroad Incorporated |
| PTRU | South American Petrolite De Venezuela |
| PTRX | Petrolite Corporation |
| PTSX | Petrosol International Incorporated |
| PTTX | TTX Company |
| PTXX | PTS Incorporated |
| PUBX | Publicker Industries Incorporated |
| PUCC | Port Utilities Commission of Charleston South Carolina |
| PVCX | BHP Cooper Incorporated |
| PVFX | General Electric Rail Services Corporation |
| PVGX | General Electric Rail Services Corporation |
| PVRR | Pioneer Valley Railroad Company Incorporated |
| PVRX | Pook Valley Rail System |
| PVS | Pecos Valley Southern Railway Company |
| PW | Providence and Worcester Railroad |
| PWCX | Inland Cement Limited |
| PWFX | Port Rail Services Incorporated |
| PWRZ | Providence and Worcester Railroad Company |
| PWV | Norfolk Southern Railway Company |
| PXCU | Phoenix Container Liners Limited |
| PXCZ | Phoenix Container Liners Limited |
| RACX | General Electric Rail Services Corporation |
| RAHX | Rohm and Haas Company |
| RAIX | Union Carbide Corporation |
| RALX | Radnor Rail Limited |
| RAMX | Rail Merchants International |
| RAPX | Rapco Transportation Company |
| RARW | Rarus Railway Company |
| RASX | C.A. Rasmussen |
| RATX | RailTex Service Company |
| RAWX | Platte River Power Authority |
| RAX | RPI-AAR Cooperative Test Program |
| RBBX | Ringling Brothers and Barnum and Bailey |
| RBCU | Rail-Bridge Corporation |
| RBCX | Rail-Bridge Corporation |
| RBLX | Brent C. Lewis |
| RBMN | Reading Blue Mountain and Northern Railroad Company |
| RBOX | TTX Company |
| RCIZ | Radich Construction Company |
| RCMX | Services Unlimited |
| RCOX | BP Products North America Incorporated |
| RCPX | Southern Illinois Railcar Company |
| RCRR | Red Coat Road and Rail Limited |
| RCRX | Reagent Chemical and Research Incorporated |
| RCRY | Raritan Central Railway LLC |
| RCSX | Railcar Solutions LLC |
| RCSZ | Rail Container Services Incorporated |
| RCTX | Railwest Canada Incorporated |
| RCWZ | Union Pacific Railroad Company |
| RDCX | Regional Disposal Company |
| RDG | Norfolk Southern Railway Company |
| RDIX | Rapid Industrial Plastics Company |
| RDMZ | Transamerica Leasing Incorporated |
| RDSZ | CSX Transportation Incorporated |
| RDWZ | Roadway Express Incorporated |
| REAU | Transamerica Leasing Incorporated |
| REAZ | TIP Intermodal Services |
| RECX | Central Louisiana Electric Company |
| REDX | Miron USA Limited |
| REDZ | REDON Incorporated |
| RELX | Relco Tank Line Incorporated |
| RESX | Rescar Incorporated |
| RFMX | Caldwell-Baker Company |
| RFP | CSX Transportation Incorporated |
| RFPU | CSX Transportation Incorporated |
| RFPZ | CSX Transportation Incorporated |
| RFRX | Rick Franklin Corporation |
| RGCX | Rio Grande Chemical Sales Company |
| RGEX | Royal Gorge Industries LLC |
| RGIX | Republic Gas and Utilities Corporation |
| RGRX | Rio Grande Railcar Company Incorporated |
| RGTU | Denver and Rio Grande Western Railroad Company |
| RGTX | Residco |
| RGTZ | Union Pacific Railroad Company |
| RGWZ | Transamerica Leasing Incorporated |
| RHRX | Rahr Malting Company |
| RICU | Rinnen GMBH and CO KG Internationale Spedition |
| RICX | Rockwell International Corporation |
| RIIX | Reilly Industries Incorporated |
| RILX | Garvey International Incorporated Garvey Grain Division |
| RIMX | Ready Mixed Concrete Company |
| RIRX | Southeastern Industrial Enterprises Incorporated |
| RJCL | R.J. Corman Railroad Company/ Cleveland line |
| RJCM | R.J. Corman Railroad Company/ Memphis Line |
| RJCN | R.J. Corman Railroad Company/ Allentown Lines Incorporated |
| RJCP | R.J. Corman Railroad Company/ Pennsylvania Lines Incorporated |
| RJCR | R.J. Corman Railroad Corporation/Bardstown Line |
| RJCW | R.J. Corman Railroad Company/ Western Ohio Line |
| RJRX | ACF Industries Incorporated |
| RKCX | Knox Kershaw Incorporated |
| RKTZ | Transamerica Leasing |
| RL | Rutland Line Incorporated |
| RLEX | Relco Locomotives Incorporated |
| RLGN | Mackenzie Northern Railway (RailAmerica) |
| RLHH | Southern Ontario Railway (RailAmerica) |
| RLIX | Rail Link Incorporated |
| RLK | Ottawa Valley Railway (RailAmerica) |
| RLMX | Joseph Transportation Incorporated |
| RMAX | Rocky Mountain Rail Society |
| RMCU | RMC (Trancoleasing) Limited |
| RMCX | Reynolds Metals Company |
| RMDX | American Refrigerator Transit Company |
| RMGX | Railcar Limited |
| RMIU | Mi Environmental Services |
| RMIX | Ready Mix Concrete Company |
| RMLU | Royal Mail Lines Limited |
| RMMX | Railcar Limited |
| RMPX | Railcar Limited |
| RMPZ | Transamerica Leasing |
| RMRR | Rocky Mountain Railcar and Railroad Incorporated |
| RMRX | Rocky Mountaineer Railtours |
| RMSX | Harsco Track Technologies |
| RNDX | ACF Industries Incorporated Amcar Division |
| ROBZ | Robco Transportation Incorporated |
| ROCX | Rocky Mountain Transportation Services |
| ROEZ | Roehl Transport Incorporated |
| ROIX | Shintech Incorporated |
| ROLU | Ro-Lo Pacific Line |
| ROPX | Rail Operators Incorporated |
| ROYU | Royal Netherlands |
| RPBX | Rhodia Incorporated |
| RPCX | Railroad Passenger Car Numbering Bureau Incorporated |
| RPIX | Rhone-Poulenc Incorporated |
| RPMZ | Transamerica Leasing Incorporated |
| RPPX | Resolution Performance Products LLC |
| RPRC | Richmond Pacific Railroad Corporation |
| RQAX | RailQuest America |
| RRBX | Rampart Range Corporation |
| RRCI | Redmont Railway Company Incorporated |
| RRCO | Rochelle Railroad Company |
| RRCX | Radar Railcar Incorporated |
| RREX | General Electric Rail Services Corporation |
| RRIU | Triton Containers |
| RRIX | Rader Railcar Incorporated |
| RRLX | Railogistics Incorporated |
| RRMX | RRM Properties Limited A California Limited Partnership |
| RRRR | Rock and Rail Incorporated |
| RRRX | Rex Leasing Incorporated |
| RRVW | Red River Valley and Western Railroad |
| RS | Roberval and Saguenay Railway Company |
| RSB | Rochester Subway |
| RSFZ | Transamerica Leasing Incorporated |
| RSIZ | Rail Services Incorporated |
| RSLX | Resolution Performance Products |
| RSM | Railroad Switching Service of Missouri Incorporated |
| RSNR | Red Springs and Northern Railroad |
| RSOX | General Electric Rail Services Corporation |
| RSP | Roscoe Snyder and Pacific Railway |
| RSPZ | Transamerica Leasing Incorporated (Union Pacific) |
| RSR | Rochester and Southern Railroad |
| RSRZ | Norfolk Southern Railway Company |
| RSS | Rockdale Sandow and Southern Railroad Company |
| RSSX | Railservice Incorporated |
| RSUX | Riley Stoker Corporation |
| RSWZ | Transamerica Leasing Incorporated |
| RSYX | Refined Sugars Incorporated |
| RT | ISG Cleveland Works Railway Company |
| RTCX | Union Tank Car Company |
| RTCZ | Rocor Freight Services |
| RTEX | Rail Trusts Equipment Incorporated |
| RTIX | RTI - Railroad Services |
| RTLX | Relco Tank Line Incorporated |
| RTMX | General Electric Rail Services Corporation |
| RTMZ | TIP Intermodal Services |
| RTPX | Savage Tolk Energy Services |
| RTRU | Road Trailer Rentals Incorporated |
| RTRX | Rocky Mountain Transportation Services |
| RTRZ | Road Trailer Rentals Limited |
| RTSX | Rail Transportation Services Incorporated |
| RTTX | TTX Company |
| RTTZ | Union Pacific Railroad Company |
| RUDX | Ruddy Tank Car Company |
| RUSX | First Union Rail |
| RUT | Vermont Railway Incorporated |
| RVIX | Rail Venture |
| RVLZ | Transamerica Leasing |
| RVPR | Riverport Railroad LLC |
| RVSC | Rio Valley Switching Company |
| RWCX | RWC Incorporated |
| RWSX | Scherer Electric Generating Facility |
| RWTX | Railwest US Incorporated |
| RWTZ | Satellite Intermodal Express |
| RXXZ | TIP Intermodal Services |
| RYAN | RYAN Industries |
| RYCU | De Rycke Vloeitransport B.V. |
| RYNX | RYAN Industries |
| SA | Norfolk Southern Railway Company |
| SAFX | Safety-Kleen Corporation |
| SAL | CSX Transportation Incorporated |
| SALX | General American Markss Company |
| SAMU | South African Marine Corporation |
| SAMX | Cargill Incorporated |
| SAN | Sandersville Railroad Company |
| SANU | Samband Islenzkra Samvinnufelag |
| SANX | San Angelo Tank Car Line |
| SAPT | Savannah Port Terminal Railroad Incorporated |
| SARX | Southern Appalachia Railway Museum |
| SATX | City Public Service Board of San Antonio Texas |
| SAUX | Sauvage Gas Company |
| SAVX | Savannah Electric and Power Company |
| SAW | South Plains Switching Limited |
| SAWU | Swedish Atlantic-Wilshelsen Line |
| SAWX | Sawyer Gas of Jacksonville Incorporated |
| SAZX | Saz Transportation Corporation |
| SB | South Buffalo Railway Company |
| SBC | Ferrocarriles Nacionales de Mexico |
| SBD | CSX Transportation Incorporated |
| SBDZ | CSX Transportation Incorporated |
| SBGU | Marine Transportation Services Sea-Barge Group |
| SBKU | Shinko Pantec Company Incorporated |
| SBLN | Sterling Belt Line Railway |
| SBLX | Sunbelt/Chlor/Alkali Partnership |
| SBPX | Spiffman LLC |
| SBRR | Stourbridge Railroad Company |
| SBVR | South Branch Valley Rail Road |
| SCBG | Santa Cruz Big Trees and Pacific Railway Company |
| SCBX | Standbridge Color Corporation |
| SCEX | Southern California Edison Company |
| SCFE | South Central Florida Express Incorporated |
| SCGX | General Electric Rail Services Corporation |
| SCHX | Rhodia Incorporated |
| SCIH | ISG South Chicago and Indiana Harbor Railway Company |
| SCIU | Sea Containers Incorporated |
| SCIX | General Electric Rail Services Corporation |
| SCJX | Chevron Phillips Chemical Company LP |
| SCKX | Northern Coal Transportation Company |
| SCL | CSX Transportation Incorporated |
| SCLU | Sea Containers Incorporated |
| SCLX | CanadianOxy Industrial Chemicals Limited Partnership |
| SCMX | Shell Oil Company |
| SCNX | South Carolina Electric and Gas Company |
| SCNZ | Shipping Corporation Of New Zealand |
| SCOX | The Scoular Company |
| SCOZ | Crab Orchard and Egyptian Railroad |
| SCPU | Alnery No. 954 Limited (U.K.) |
| SCPX | Shell Oil Company |
| SCRF | South Carolina Central Railroad |
| SCRX | Santa Clarita Railway (James Clark and Company) |
| SCST | Seaboard Transportation Company |
| SCSX | CIT Group/Capital Finance Incorporated |
| SCT | Sioux City Terminal Railway |
| SCTR | South Central Tennessee Railroad LLC |
| SCTU | Shirlstar Container Transport Limited |
| SCVU | SCVU |
| SCWX | South Carolina Public Service Authority |
| SCWZ | Sea Containers |
| SCXF | South Central Florida Express Incorporated |
| SCXU | Alnery No. 954 Limited (U.K.) |
| SCXY | St. Croix Valley Railroad Company |
| SCYX | First Union Rail |
| SCYZ | Sea Containers Incorporated |
| SCZU | Yorkshire Marine Containers (BNSF) |
| SDBB | Somerset Terminal Railroad Incorporated |
| SDCU | Southern California Edison |
| SDCX | Consolidated Minerals Incorporated Feed Supplement Division |
| SDEX | Savage-Harrington Energy |
| SDIY | San Diego and Imperial Valley Railroad Company |
| SDPX | South Dakota Soybean Processors |
| SDRX | Central Puget Sound Regional Transit Authority |
| SDSU | Soo Line Railroad (CPR) |
| SE | Semo Port Railroad Incorporated |
| SEAU | Sea-Land Service Inc |
| SECX | General Electric Rail Services Corporation |
| SEFX | North American Rails Leasing Corporation |
| SEGX | SEGX Railcar LLC |
| SEI | Southeastern International Corporation |
| SEIU | Strategic Equipment Systems Incorporated |
| SEIX | Seimax Gas Corporation |
| SEIZ | Strategic Equipment Systems Incorporated |
| SEKR | Southeast Kansas Railroad Company |
| SEMX | Seminole Electric Cooperative Incorporated |
| SEPA | Southeastern Pennsylvania Transportation Authority |
| SEPX | Southwestern Electric Power Company |
| SEQX | Sequa Chemicals Incorporated |
| SERA | Sierra Railroad Company |
| SERX | ACF Industries Incorporated |
| SESX | BC Hydro |
| SFAL | SF and L Railway Incorporated |
| SFIX | Helm Financial Corporation |
| SFLC | Burlington Northern and Santa Fe Railway Company |
| SFLR | SF and L Railway Incorporated |
| SFQ | Burlington Northern and Santa Fe Railway Company |
| SFR | Southern Freignt Railroad (Southern Freight Logistics LLC) |
| SFRX | Philip Metals Incorporated |
| SFS | Santa Fe Southern Railway Incorporated |
| SFSX | San Francisco Transportation Services Company Incorporated |
| SFTU | Burlington Northern and Santa Fe Railway Company |
| SFTX | Continental Tank Car Corporation |
| SFTZ | Burlington Northern and Santa Fe Railway Company |
| SFVZ | Burlington Northern and Santa Fe Railway Company |
| SGAU | Saga and Company Limited |
| SGAX | SGA Leasing Company |
| SGCX | Sungas Corporation of Florida |
| SGIX | Vision Energy Minnesota Incorporated |
| SGLR | Seminole Gulf Railway LP |
| SGRX | Skip Gibbs |
| SGSX | Terra International Incorporated |
| SGTU | Sogotra Limited |
| SGVY | Saginaw Valley Railway Company Incorporated |
| SH | Steelton and Highspire Railroad Company |
| SHAX | Sherwin Alumina Company |
| SHLX | Procor Limited |
| SHPX | ACF Industries Incorporated |
| SHRX | Smoky Hill Railway and Historical Society Incorporated |
| SHSZ | H and S Railroad Company Incorporated |
| SHWU | Showa Maritime USA Incorporated |
| SHWZ | Showa Line Limited |
| SI | Union Pacific Railroad Company |
| SICX | Sloss Industries Corporation |
| SIEX | Southeastern Industrial Enterprises Incorporated |
| SIGX | Southern Indiana Gas and Electric |
| SILU | Suttons International |
| SILX | S and I Locomotive Services Incorporated |
| SIMX | Sturgis Iron and Metal Company Incorporated |
| SIND | Southern Indiana Railway Incorporated |
| SIPX | Arrendadora Sipco SA de CV |
| SIRR | Southern Industrial Railroad Incorporated |
| SIRX | Southern Illinois Railcar Company |
| SISU | Scandinavian Cargo Sea AB |
| SITX | Sherritt International Corporation |
| SJEX | SJEX Incorporated |
| SJNX | Mobay Corporation |
| SJRT | St. Johns River Terminal |
| SJRX | Jacksonville Electric Authority |
| SJSZ | Specialty Chassis Leasing Incorporated |
| SJVR | San Joaquin Valley Railroad Company |
| SKCX | ARCO Chemical Company |
| SKGX | Sibley Railcar and Parts Incorporated |
| SKIU | XTRA Intermodal |
| SKIZ | XTRA Intermodal |
| SKNX | Saskatchewan Grain Car Corporation |
| SKOL | South Kansas and Oklahoma Railroad |
| SKPR | Southern Kent and Pacific RR Company |
| SKPX | Saskatchewan Grain Car Corporation |
| SKRX | Schuylkill Railcar LP |
| SKRZ | XTRA Intermodal |
| SL | Salt Lake City Southern Railroad |
| SLAL | South Plains Lamesa Railroad |
| SLBU | Showa Line Limited |
| SLC | San Luis Central Railroad Company |
| SLCU | SLC Societe Location Containers |
| SLDU | Showa Line Limited |
| SLEX | Short Line Enterprises Limited |
| SLFU | Showa Line Limited |
| SLGG | Sidney and Lowe Railroad (Progress Rail Services Corporation) |
| SLGW | Salt Lake Garfield and Western Railway Company |
| SLHU | Showa Line Limited |
| SLIU | Star Lines Equipment Incorporated |
| SLIZ | Star Lines Shipping Company Incorporated |
| SLKU | Sea-Link Container Lines |
| SLOU | Showa Line Limited |
| SLQ | St. Lawrence and Atlantic Railroad (Quebec) Incorporated (GWI) |
| SLR | St. Lawrence and Atlantic Railroad Company (GWI) |
| SLRS | SMS Rail Service Incorporated |
| SLRU | Showa Line Limited |
| SLSF | Burlington Northern and Santa Fe Railway Company |
| SLVX | Silver Enterprises |
| SLWC | Stillwater Central Railroad Company Incorporated |
| SM | St. Marys Railroad Company |
| SMA | San Manuel Arizona Railroad Company |
| SMCX | San Miguel Electric Cooperative |
| SMCZ | Maine Central Railroad Company |
| SMDU | Minnesota Mining and Manufacturing (3M) |
| SMEX | South Mississippi Electric Power Association |
| SMIX | Structural Metals Incorporated |
| SMLU | Seaboard Marine Limited |
| SMLZ | Seaboard Marine Limited |
| SMMX | St. Marys Cement Company |
| SMNR | Southern Manitoba Railway Incorporated |
| SMNX | Solvay Minerals Incorporated |
| SMPX | Commercial Metals Company |
| SMRR | Sisseton Milbank Railroad Incorporated |
| SMRX | Atlanta Chapter - National Railway Historical Society Incorporated |
| SMV | Santa Maria Valley Railroad Company |
| SNBL | Sioux City and New Orleans Barge Line |
| SNFX | IND/AG Chemicals Incorporated |
| SNHX | IND/AG Chemicals Incorporated |
| SNLU | Schneider National |
| SNLZ | Schneider National |
| SNR | Sunflour Railroad Incorporated |
| SNWU | Ste National Der Wagon Reservior |
| SOCX | BP Amoco Chemical Company BP Oil Division |
| SOEX | Shell Oil Company |
| SOFU | Sofredi |
| SOIX | Sand Seed Service Incorporated |
| SOLX | Solite Corporation |
| SOM | Somerset Railroad Corporation |
| SONX | Soneco Services Incorporated |
| SOO | Soo Line Railroad (CPR) |
| SOOZ | Soo Line Railroad (CPR) |
| SOPR | South Pierce Railroad |
| SORA | Southern Rails Cooperative Limited |
| SORX | Sorrells Farm Supply Incorporated |
| SOTX | Southern Concrete Construction Company Incorporated |
| SOU | Norfolk Southern Railway Company |
| SOUU | Norfolk Southern Railway Company |
| SP | Union Pacific Railroad Company |
| SPAX | Southeastern Pennsylvania Transportation Authority |
| SPAZ | Spanish Lines |
| SPCH | Quest Communications Corporation |
| SPCU | Spacific Container Lease Pty Limited |
| SPCX | Quest Communications Corporation |
| SPDU | Union Pacific Railroad Company |
| SPDZ | Union Pacific Railroad Company |
| SPFE | Union Pacific Railroad Company |
| SPFZ | Union Pacific Railroad Company |
| SPGX | Suburban Propane LP |
| SPIX | Sweeteners Plus Incorporated |
| SPLU | Compania Trasatlantica Espanola (Spanish Line) |
| SPLZ | Union Pacific Railroad Company |
| SPPU | Splosna Plovba Piran |
| SPQ | Union Pacific Railroad Company |
| SPRX | Seaport Central Railroad Incorporated |
| SPS | Burlington Northern and Santa Fe Railway Company |
| SPSX | Progress Rail Services Corporation |
| SPTX | Trinity Rail Management Incorporated |
| SPTZ | Union Pacific Railroad Company |
| SPUD | St. Paul Union Depot Company |
| SQVR | Sequatchie Valley Railroad |
| SR | Kansas City Southern Railway Company |
| SRAX | Southern Rail Associates Incorporated |
| SRC | Strasburg Railroad Company |
| SRCX | Sid Richardson Carbon Company |
| SREX | StatesRail Equipment Company LLC |
| SRIX | Southwest Rail Industries Incorporated |
| SRLX | Southern Rail Leasing Incorporated |
| SRN | Sabine River and Northern Railroad Company |
| SRNJ | Southern Railroad Company of New Jersey |
| SRP | Safe Handling Rail Incorporated |
| SRPX | Salt River Project Agricultural Improvement and Power District |
| SRRX | Star Railroad Equipment |
| SRSU | Sea-Road Shipping SA Miami FL |
| SRSX | Sperry Rail Service |
| SRTX | Southwind Rail Travel Limited |
| SRY | Southern Railway of British Columbia Limited |
| SRYC | Sierra Railway Company of California |
| SS | Sand Springs Railway Company |
| SSAM | Sault Ste. Marie Bridge Company |
| SSC | Southern Switching Company |
| SSCU | States Steamship Company |
| SSCZ | States Steamship Company |
| SSD | Union Pacific Railroad Company |
| SSDK | Savannah State Docks Railroad Company |
| SSH | South Shore |
| SSIU | Japan Line Limited |
| SSIX | General Electric Rail Services Corporation |
| SSIZ | Japan Line Limited |
| SSJR | Sheffield Station Junction Railway |
| SSJU | Sumitomo 3M |
| SSLV | Southern San Luis Valley Railroad |
| SSLZ | Sea Star Line LLC |
| SSMX | Joseph Transportation Incorporated |
| SSOR | Sisseton Southern Railway Company |
| SSPB | Seaspan International Limited |
| SSPX | AE Staley Manufacturing Company |
| SSSU | Hansen and Tidemann Incorporated |
| SSSX | Transportation Logistics Corporation |
| SSSZ | Hansen and Tidemann Incorporated |
| SSVX | SSI Industries (M of Way Cars) |
| SSW | Union Pacific Railroad Company |
| SSWN | Union Pacific Railroad Company |
| ST | ST Rail System |
| STAU | Star Shipping A Norway |
| STAX | OCI Chemical Corporation |
| STCX | Sterling China Company (Captive Service) |
| STE | Stockton Terminal and Eastern RR |
| STEX | Sterling Chemicals Incorporated |
| STGX | South Texas Grain Company Incorporated |
| STJX | Stone Container (Canada) Incorporated |
| STLH | St. Lawrence and Hudson Railway Company Limited (CPR) |
| STLU | Matson Navigation Company |
| STLX | AE Staley Manufacturing Company |
| STLZ | Matson Navigation Company |
| STMA | St. Maries River Railroad Company |
| STMX | AE Staley Manufacturing Company Industrial Products Group |
| STMZ | Texas Mexican Railway Company |
| STOX | ACF Industries Incorporated |
| STPX | Strategic Transport Systems Incorporated |
| STR | Shawnee Terminal Railway Company |
| STRT | Stewartstown Railroad Company |
| STRX | Trinity Industries Leasing Company |
| STRZ | Stroh/Schlitz Brewery |
| STSX | AE Staley Manufacturing Company |
| STTU | Shirlstar Container Transport Limited |
| STTX | TTX Company |
| STTZ | Stevens Transport |
| SUAB | Southern Alabama Railroad Company Inc |
| SUDU | Columbus Line Incorporated |
| SULX | Sultran Limited |
| SUN | Sunset Railway Company |
| SUNX | Sun Refining and Marketing Company |
| SUTU | Suttons International |
| SUTX | Sumter Transport Company Incorporated |
| SV | Greater Shenandoah Valley Development Company (Shenandoah Valley Railroad) |
| SVRR | Shamokin Valley Railroad Company |
| SW | Southwestern Railroad Company |
| SWFX | Stone Container Corporation |
| SWFZ | Swift Transportation |
| SWGR | Seagraves Whiteface and Lubbock Railroad |
| SWKR | San Pedro and Southwestern Railway Company |
| SWP | Southwest Pennsylvania Railroad Company |
| SWPX | Southwestern Portland Cement Company |
| SWRX | Transportation Equipment Incorporated |
| SWTZ | St. Louis Southwestern Railway Company |
| SWYX | OCI Chemical Wyoming Company |
| SXSX | Ron Johnson and Associates |
| SYRR | Sandusky River Railroad |
| SYRX | ADM Transportation |
| SYSX | Winter Bird Corporation |
| TACX | American Coal Sales Company |
| TAEX | The Andersons |
| TAG | Norfolk Southern Railway Company |
| TAGX | Texoma AG Products Incorporated |
| TAIX | Texas Alkyls Incorporated |
| TALX | Trical Incorporated |
| TALZ | Transamerica Leasing Incorporated |
| TANX | TransiTech Incorporated |
| TANZ | Intermodal Express Incorporated |
| TARX | Sandersville Leasing Incorporated |
| TASD | Terminal Railway Alabama State Docks |
| TASX | TransRail Incorporated |
| TATX | General Electric Rail Services Corporation |
| TAXU | Trac Lease Incorporated |
| TAXZ | Trac Lease Incorporated |
| TAZX | Trade Wind Limited |
| TBCU | Boeing Company |
| TBCX | Boeing Company |
| TBER | Terre Haute Brazil and Eastern Railroad |
| TBOX | TTX Company |
| TBRX | Taylor Rail Group Incorporated |
| TBRY | Thermal Belt Railway |
| TCAX | General Electric Rail Services Corporation |
| TCB | Texas Central Business Lines Corporation |
| TCCX | TCCX Corporation |
| TCDX | Union Tank Car Company |
| TCG | Tucson Cornelia and Gila Bend Railroad Company |
| TCGX | Williams Energy Ventures Incorporated |
| TCGZ | Columbus and Greenville Railway |
| TCIX | Trinity Chemical Leasing LLC |
| TCKR | Turtle Creek Industrial Railroad Incorporated |
| TCLU | TCL Tankcargo Container Leasing SA |
| TCLX | Trinity Chemical Leasing LLC |
| TCMX | CIT Group/Capital Finance Incorporated |
| TCOX | The Concrete Company |
| TCOZ | Terminal Consolidation Company |
| TCPX | Transport Capital Rail Partners LLC |
| TCPZ | Transamerica Leasing Incorporated |
| TCQX | Trinity Rail Management Incorporated |
| TCRY | Tri-City Railroad Company |
| TCSZ | Triple Crown Services Company |
| TCT | Texas City Terminal Railway Company |
| TCTX | Tube City Incorporated |
| TCWR | Twin Cities and Western Railroad |
| TCXU | TCX S A R L |
| TCZU | Triple Crown Services Company |
| TDNZ | Transamerica Leasing Incorporated (BNSF) |
| TDPZ | Transport International Pool Incorporated |
| TDSZ | Transamerica Distribution Services Incorporated |
| TE | Tacoma Eastern Railway Company |
| TEAX | Transportation Equipment Incorporated |
| TEGX | Transenergy Grinding Incorporated |
| TEHU | Trans Ocean Container Corporation |
| TEIX | Transportation Equipment Incorporated |
| TELX | ELF Atochem North America Incorporated |
| TEMX | Temple-Inland Forest Products |
| TENN | Tennessee Railway Company |
| TERX | Southeastern Industrial Enterprises Incorporated |
| TERZ | Tacoma Eastern Railway Company |
| TEUU | Gulfcoast Transit Company |
| TEXC | Texas Central Railroad Company |
| TEXU | Textainer Incorporated |
| TFLU | Trans Freight Lines Incorporated |
| TFM | TFM SA de CV |
| TFTX | Tifton Terminal Railway Museum Incorporated |
| TFVM | Terminal Ferroviaria Del Velle De Mexico SA de CV |
| TFZ | Terminal Freight Handling Company |
| TGAX | PCS Phosphate Company Incorporated |
| TGCU | TCS Transglobe Container Services GMBH |
| TGCX | PolyOne Company |
| TGIX | PCS Phosphate Company Incorporated |
| TGOX | First Union Rail |
| TGPU | Transamerica Leasing Incorporated |
| TGPX | Tamak Transportation Corporation |
| TGRX | Transglobal Rail Incorporated |
| TGSX | FMC Corporation |
| THB | Canadian Pacific Railway Company |
| THCX | MG Industries |
| THRX | Transportation Corporation of America |
| TI | Turners Island LLC |
| TIBR | TimberRock Railroad Company Incorporated |
| TILU | Tirrenia Di Navigazione S.P.A. |
| TILX | Trinity Industries Leasing Company |
| TIMX | Trinity Industries Leasing Company |
| TINU | Tioxide (U.K.) Limited |
| TINX | Trinity Industries Leasing Company |
| TIPZ | TIP Intermodal Services |
| TIRL | Tonawanda Island Railroad Incorporated |
| TIRZ | Union Pacific Railroad Company |
| TISH | Tishomingo Railroad Company Incorporated |
| TISX | Trinity Industries Leasing Company |
| TJRX | S. M. Brooks |
| TKCU | ABS Pacific |
| TKCX | Thiele Kaolin Company |
| TKEN | Tennken Railroad Company Incorporated |
| TLAU | Trail-Con Leasing Incorporated |
| TLAZ | Trail-Con Leasing Incorporated |
| TLCX | General Electric Rail Services Corporation |
| TLDX | General Electric Rail Services Corporation |
| TLIU | Trans Leasing Incorporated |
| TLLX | Trinity Industries Leasing Company |
| TLTX | Tilcon Tomasso Quarries Incorporated |
| TM | Texas Mexican Railway Company |
| TMAX | Tenneco Packaging Company |
| TMBL | Tacoma Municipal Belt Line Railway |
| TMEX | Trinity Industries Leasing Company |
| TMEZ | Transamerica Leasing Incorporated (BNSF) |
| TMGX | Transporte Multimodal de Granos |
| TMIX | TransMatrix Incorporated |
| TMKZ | Transport International Pool Incorporated |
| TMLU | Taylor Minster Leasing Limited |
| TMLX | Temco Corporation |
| TMLZ | Seaboard Marine Limited |
| TMMU | Transportacion Maritima Mexicana SA |
| TMMX | TMM Logistics SA de CV |
| TMMZ | TMM Logistics SA de CV |
| TMPX | Texas Municipal Power Agency |
| TMPZ | TIP Intermodal Services |
| TMSS | Towanda-Monroeton Shippers Lifeline Incorporated |
| TMT | Trailer Marine Transport Corporation |
| TMTU | P and O Tank Masters |
| TMTZ | Trailer Marine Transport Corporation |
| TN | Texas and Northern Railway Company |
| TNAX | TransAmerican Refining Corporation |
| TNCX | General Electric Rail Services Corporation |
| TNER | Texas Northeastern Division Mid-Michigan Railroad Incorporated |
| TNHR | Three Notch Railroad Incorporated |
| TNM | Union Pacific Railroad Company |
| TNMR | Texas and New Mexico Division Austin and Northwestern Railroad Company Limited |
| TNR | Kansas City Southern Railway Company |
| TNXU | Transx Limited |
| TNXZ | Transx Limited |
| TOE | Texas Oklahoma and Eastern RR Company |
| TOFU | TOFC Incorporated Division of Fruehauf |
| TOFZ | TOFC Incorporated Division of Fruehauf |
| TOLU | Trans Ocean Leasing |
| TOLZ | Trans Ocean Leasing |
| TONU | Trans Ocean Line Limited |
| TOR | RailLink Canada Limited (RailAmerica) |
| TORU | Torm Lines |
| TORZ | Torco Inc |
| TOTU | Tiphook Container |
| TOTX | Cotco Incorporated |
| TP | Union Pacific Railroad Company |
| TPCZ | Tiphook Container Rental Company Limited |
| TPEX | General Electric Railcar Services Corporation |
| TPFX | General Electric Rail Services Corporation |
| TPGX | Technical Propellants Incorporated |
| TPHU | Tiphook Container Rental Company Limited |
| TPHX | Thomas Payne Holdings Incorporated |
| TPIU | Tropicana Products Incorporated |
| TPIX | Tropicana Products Sales Incorporated |
| TPKU | Toledo Peoria and Western Railway Corporation |
| TPLX | Trans-Pacific Lines |
| TPSX | TPS Leasing Company LLC |
| TPTX | Trailer Train Company (TTX) |
| TPW | Toledo Peoria and Western Railway Corporation |
| TPXU | Tiphook Container Rental Company Limited |
| TPZ | Union Pacific Railroad Company |
| TQEX | First Union Rail |
| TR | Tomahawk Railway LP |
| TRAU | Associated Transport Line |
| TRAX | Railtex Incorporated (RailAmerica) |
| TRC | Trona Railway Company |
| TRCX | Tri-County Commuter Rail Authority |
| TRDU | Triad Transport Incorporated |
| TREX | Tetra Technologies Incorporated |
| TRFU | Trans Freight Incorporated |
| TRFZ | Transcontinental Refrigerator Lines Incorporated |
| TRGX | First Union Rail |
| TRIN | Trinidad Railway Incorporated |
| TRIU | Triton Container International Incorporated |
| TRIX | General American Marks Company |
| TRLU | Transamerica Leasing Incorporated |
| TRLX | Texas Railcar Leasing Company |
| TRMW | Tacoma Rail Mountain Division (City of Tacoma) |
| TRMX | The Railroad Museum-TRM Industries |
| TRNX | General Electric Rail Services Corporation |
| TROU | Trans Ocean Limited |
| TRPX | AmeriGas Propane LP |
| TRRA | Terminal Railroad Association of St. Louis |
| TRSU | Transconex Incorporated |
| TRTX | W.J.Kirberger Trustee |
| TRUX | Midwest Bottle Gas Company |
| TRZU | Transamerican Container Leasing Company |
| TRZZ | Transamerica Leasing Incorporated |
| TSBY | Tuscola and Saginaw Bay Railway Company |
| TSE | Texas South-Eastern Railroad Company |
| TSFU | Transamerica Leasing Incorporated (BNSF) |
| TSKU | N.Y.K. Line |
| TSLZ | Transportation Specialists Limited |
| TSNR | Tyson Railroad Incorporated |
| TSOZ | Tank Solutions Incorporated |
| TSPZ | Transamerica Leasing Incorporated (BNSF) |
| TSRD | Twin State Railroad Company |
| TSRR | Tennessee Southern Railroad Company |
| TSSX | US Department of Energy Albuquerque Operations Office |
| TSSZ | Transamerica Leasing Incorporated (BNSF) |
| TSU | Tulsa-Sapulpa Union Railway Company LLC |
| TSVX | Tennsv Incorporated |
| TSWR | Toppenish Simcoe and Western Railroad |
| TSXX | Tri-State Generation and Transmission Association |
| TSXZ | Transamerica Leasing Incorporated |
| TTAX | TTX Company |
| TTBX | TTX Company |
| TTCU | TNC Chemicals Company |
| TTCX | TTX Company |
| TTDX | TTX Company |
| TTEX | TTX Company |
| TTFX | TTX Company |
| TTGX | TTX Company |
| TTHX | TTX Company |
| TTIS | Transkentucky Transportation Railroad Incorporated |
| TTIU | Thailand Tantalum Industry Corporation Limited |
| TTIZ | Tandem Transport Incorporated |
| TTJX | TTX Company |
| TTKX | TTX Company |
| TTLC | Tropical Trailer Leasing Corporation |
| TTLX | TTX Company |
| TTLZ | Tropical Trailer Leasing Corporation |
| TTMX | TTX Company |
| TTNX | TTX Company |
| TTOX | TTX Company |
| TTOZ | Totem Ocean Trailer Express Incorporated |
| TTPX | TTX Company |
| TTPZ | Canadian National Railway |
| TTQX | TTX Company |
| TTR | Talleyrand Terminal Railroad Company |
| TTRU | Tropical Shipping and Construction Company Limited |
| TTRX | TTX Company |
| TTRZ | Train Trailer Rentals Limited |
| TTSX | TTX Company |
| TTSZ | Triton Transport Services |
| TTTU | Transport International Containers SA |
| TTTX | TTX Company |
| TTTZ | Puerto Rican Maritime Authority |
| TTUX | TTX Company |
| TTVX | TTX Company |
| TTWU | Canadian National Railway |
| TTWX | TTX Company |
| TTWZ | Canadian National Railway |
| TTX | TTX Company |
| TTZX | TTX Company |
| TUGX | TXU Mining Company |
| TUPX | Texas Ultra Pure Incorporated |
| TUST | Texarkana Union Station Trust |
| TVAX | Tennessee Valley Authority |
| TVBX | TVGX Group |
| TVM | Ferrocarriles Nacionales de Mexico |
| TVRR | Tulare Valley Railroad Company |
| TWLZ | Trans West Logistics |
| TWNZ | Twinstar Leasing Limited |
| TWSX | AE Staley Manufacturing Company |
| TXGN | Texas Gonzales and Northern Railway Company |
| TXIX | Texas Industries Incorporated |
| TXNW | Texas North Western Railway Company |
| TXOR | Texas and Oklahoma Railroad Company |
| TXPF | Texas Pacifico Transportation Limited |
| TXPX | Texas Petrochemicals Corporation |
| TXR | Texas Rock Crusher Railway Company |
| TXTC | Texas Transportation Company |
| TXUX | TXU Electric |
| TXXZ | Trac Lease Incorporated |
| TYBR | Tyburn Railroad Company |
| TYC | Tylerdale Connecting |
| TYPX | Tyco Plastics |
| WA | CSX Transportation Incorporated |
| WAB | Norfolk Southern Railway Company |
| WABZ | WTL Rail Corporation |
| WACR | Washington County Railroad Corporation |
| WACX | Albright and Wilson Company |
| WAER | Wabash and Erie Railroad |
| WAFX | Western Ash Company |
| WAGX | PCS Phosphate Company Incorporated |
| WAJU | Elder Dempster Lines Nigerian National Line |
| WAKX | Wake Partnership |
| WAMX | Webb Asset Management |
| WAND | Wisconsin and Michigan Railway Company |
| WAR | Warrenton Railroad Company |
| WATC | Washington Terminal Company |
| WATR | Water Carriers |
| WATZ | Western Auto |
| WBCR | Wabash Central Railroad Corporation |
| WBCX | Blue Circle Incorporated |
| WBMX | Lauhoff Grain Company |
| WBTS | Waco Beaumont Trinity and Sabine Railway Company |
| WC | Wisconsin Central Limited |
| WCAX | Westcan Rail Limited |
| WCCL | Wisconsin Chicago Link Limited |
| WCCX | Consolidation Coal Company |
| WCDX | Farmland Industries Incorporated |
| WCFX | General Electric Rail Services Corporation |
| WCHX | Walter Haffner Company |
| WCLC | Waccamaw Coast Line Railroad Company |
| WCLR | Waccamaw Coast Line Railroad Company |
| WCLU | Orient Overseas Line Incorporated |
| WCLZ | Wisconsin Central Limited |
| WCOR | Wellsboro and Corning Railroad Company |
| WCQ | Wisconsin Central Limited |
| WCRC | Columbia Basin Railroad Company |
| WCRL | West Chester Railroad Company |
| WCSX | Savage-Tolk Energy Services |
| WCTR | WCTU Railway Company |
| WCTU | WCTU Railway Company |
| WCTX | Resource Recycling Incorporated |
| WDAX | Washington Department of Agriculture |
| WE | Wheeling and Lake Erie Railway Company |
| WECX | Westinghouse Electric Corporation |
| WEIX | Wilbur-Ellis Company |
| WELX | White Equipment Leasing Corporation |
| WEPX | Wisconsin Electric Power Company |
| WERX | Western Railroads Incorporated |
| WERZ | Werner Enterprises Incorporated |
| WESX | Westar Timber Limited |
| WETZ | West East Transport Company |
| WEYU | Weyerhaeuser Company |
| WFAX | Western Fuels Association Incorporated |
| WFCX | Western Farmers Electric Cooperative |
| WFIX | First Union Rail |
| WFS | West Isle Line Incorporated |
| WGCR | Wiregrass Central Railroad. Incorporated |
| WGFX | Willard Grain and Feed Incorporated |
| WGR | Willamina and Grand Ronde Railway |
| WHCU | US Department of Energy |
| WHMX | Miner Enterprises |
| WHOE | Walking Horse and Eastern Railroad |
| WHRC | Windsor and Hantsport Railway Company |
| WHTX | ADM Milling Company |
| WHTZ | Riley Whittle Incorporated (RWI Transportation) |
| WIF | West India Fruit and Steamship |
| WIIX | Williamette Industries Incorporated |
| WIKU | Textainer Incorporated |
| WIMX | Pennsylvania Lime Company |
| WISU | W.I.SA |
| WISX | Alliant Energy |
| WITX | General Electric Rail Services Corporation |
| WJ | West Michigan Railroad Company |
| WKRL | Western Kentucky Railway LLC |
| WLDX | Weldship Corporation |
| WLO | Waterloo Railway Company |
| WLPX | Westlake Polymers Corporation |
| WM | CSX Transportation Incorporated |
| WMI | West Michigan Railroad Co |
| WMIX | Waste Management of Illinois Incorporated |
| WMSC | White Mountain Scenic Railroad |
| WNCX | Wabash National Finance Corporation |
| WNCZ | Wabash National Finance Corporation |
| WNFR | Kanawha Rail Corporation |
| WNGX | Western Natural Gas Company |
| WNYP | Western New York and Pennsylvania Railroad LLC |
| WNYX | Western New York Railway Historical Society |
| WOHO | Wabash and Ohio Railroad |
| WOLZ | H. O. Wolding Incorporated |
| WP | Union Pacific Railroad Company |
| WPEX | Wabash Power Equipment Company |
| WPGX | Western Paving Construction Company |
| WPMU | Union Pacific Railroad Company |
| WPMW | Union Pacific Railroad Company |
| WPRR | Willamette and Pacific Railroad |
| WPRU | Waterman of Puerto Rico-USA Incorporated |
| WPSX | Wisconsin Public Service Corporation |
| WPTZ | Union Pacific Railroad Company |
| WPXZ | Union Pacific Railroad Company |
| WPY | White Pass and Yukon Corporation Limited |
| WPZ | Union Pacific Railroad Company |
| WRDX | MidAmerican Energy Company |
| WREX | Western Railroad Equipment Company |
| WRFX | White River Trading Incorporated |
| WRIX | Western Rail Incorporated |
| WRLX | Relco Tank Line Incorporated |
| WRNX | Chevron USA Incorporated |
| WRPI | Western Railroad Properties Incorporated |
| WRPX | PSI Energy Incorporated |
| WRRC | Western Rail Road Company |
| WRSX | Warren Railcar Service Incorporated |
| WRWK | Providence and Worcester Railroad |
| WRWX | Trinity Rail Management Incorporated |
| WRX | Western Refrigerator Line Company Terminal |
| WRY | Waterloo Railway Company |
| WS | Walkersville Southern Railroad |
| WSIX | Watco Switching Indiana |
| WSLZ | Wiley Sanders Truck Lines Incorporated |
| WSOR | Wisconsin and Southern Railroad Company |
| WSOX | First Union Rail |
| WSOZ | Wisconsin and Southern Railroad Company |
| WSPX | Wheelstar Corporation |
| WSR | Warren and Saline River Railroad |
| WSRY | Winamac Southern Railway Company |
| WSRZ | Wisconsin and Southern Railroad Company |
| WSS | Winston-Salem Southbound Railway Company |
| WSSX | Wedron Silica Company |
| WSTX | Whitestone Supply Company |
| WSTZ | Westside Transport Incorporated |
| WSX | Wierton Steel Division National Steel Corporation |
| WTCO | Western Transportation Company |
| WTCX | Weyerhaeuser Company |
| WTJR | Wichita Tillman and Jackson Railway Company Inc |
| WTL | West Texas and Lubbock Railroad Company |
| WTLC | West Texas and Lubbock Railroad Company |
| WTLR | West Texas and Lubbock Railroad Company |
| WTLZ | WTL Rail Corporation |
| WTNN | West Tennessee Railroad Corporation |
| WTRM | Warren and Trumbull Railroad Company |
| WTRY | Wilmington Terminal Railroad Incorporated |
| WTSE | West Shore Railroad Corporation |
| WTTX | TTX Company |
| WUT | Wichita Union Terminal Railway |
| WVC | Durbin and Greenbrier Valley Railroad (West Virginia Central) |
| WVCX | Westvaco Corporation |
| WVIU | West Van Incorporated |
| WVIZ | West Van Incorporated |
| WVN | Kingswood Northern Incorporated (West Virginia Northern Railroad) |
| WVR | Willamette Valley Railway Company |
| WW | Winchester and Western Railroad Company |
| WWBX | WWIB Transportation Services |
| WWEX | Railworks Wood Waste Energy Incorporated |
| WWLU | Wihl Wilhelmsen |
| WWLX | Trinity Industries Leasing Company |
| WWRC | Wilmington and Western Railroad |
| WYCO | Wyoming and Colorado Railroad |
| WYCX | Weyerhauser Canada Limited |
| WYEC | Wye Transportation Company |
| WYS | Wyandotte Southern Railroad Company |
