| ROAD |
AAR MARK |
FULL NAME |
|---|
| A&EC | AEC | Atlantic & East Carolina Railway |
| A&LM | ALM | Arkansas & Louisiana Missouri Rwy |
| A&R | AR | Aberdeen & Rockfish Railroad |
| A&S | ALS | Alton & Southern Railroad |
| A&WP | AWP | Atlanta & West Point Railroad |
| A.A.R | AAR | American Association Of Railroads |
| AARR | AA | Ann Arbor Railroad System |
| AC&F | ACFX | American Car & Foundry Company |
| AC&Y | ACY | Akron, Canton & Youngstown RR |
| ACL | ACL | Atlantic Coast Line Railroad |
| AGS | AGS | Alabama Great Southern Railroad |
| AH&D | . | American Hoist & Derrick |
| ALASK | ARR | Alaska Railroad |
| ALCO | . | American Locomotive Company |
| AMTRK | AMTK | Amtrak |
| ARE | . | American Railway Express |
| AT&SF | ATSF | Atchison, Topeka & Santa Fe Rwy. |
| AUSTR | . | Commonwealth of Australia |
| B&A | BA | Boston & Albany Railroad |
| B&LE | BLE | Bessemer & Lake Erie Railroad |
| B&M | BM | Boston & Maine Railroad |
| B&O | BO | Baltimore & Ohio Railroad |
| BA&P | BAP | Butte, Anaconda & Pacific Railway |
| BAR | BAR | Bangor & Aroostook Railroad |
| BCR | BCIT | British Columbia Railway; BC Rail |
| BEYER | . | Beyer-Garratt |
| BHP | . | BHP Billiton |
| BLW | . | Baldwin Locomotive Works |
| BMT | BMT | Brooklyn-Manhattan Transit |
| BN | BN | Burlington Northern Railroad |
| BNSF | BNSF | Burlington Northern Santa Fe Rwy. |
| BORDN | . | Borden, Inc. |
| BR | . | British Railways |
| BRT | . | Brooklyn Rapid Transit Company |
| BTC | . | Baltimore Transit Company |
| C&EI | CEI | Chicago & Eastern Illinois RR |
| C&IM | CIM | Chicago & Illinois Midland Rwy. |
| C&LE | . | Cincinnati & Lake Erie |
| C&NW | CNW | Chicago & Northwestern Railway |
| C&O | CO | Chesapeake & Ohio Railway |
| C&S | CS | Colorado & Southern Railway District |
| C&Sn3 | CS | Colorado & Southern Narrow Gauge |
| C&WC | . | Charleston & West Carolina RR |
| CA&E | . | Chicago, Aurora & Elgin Railroad |
| CALTR | . | Caltrain |
| CB&Q | CBQ | Chicago, Burlington & Quincy RR |
| CD&M | . | Columbus, Delaware & Marion Rwy. |
| CERA | . | Central Electric Railway Assoc. |
| CGW | CGW | Chicago Great Western Railway |
| CIT | CEFX | CIT Equipment Finance Corporation |
| CLINC | CRR | Clinchfield Railroad |
| CM | . | Colorado Midland Railway |
| CM&O | CMO | Chigago, St. Paul, Minneapolis & Omaha Rwy. |
| CMSPP | MILW | Chigago, Milwaukee, St. Paul & Pacific RR |
| CN | CN | Canadian National Railways |
| CNJ | CNJ | Central Railroad of New Jersey |
| CNOTP | CNTP | Cincinnati, New Orleans & Texas Pacific Rwy. |
| CNS&M | . | Chicago, North Shore & Milwaukee RR |
| COD | . | City of Detroit - D.S.R. - Dept. of Street Railways |
| CONN | . | Connecticut Co. |
| CONOC | CONX | Conoco, Inc. |
| CONRL | CR | Conrail |
| CP | . | Central Pacific Railroad |
| CP-UP | . | Central Pacific - Union Pacific |
| CPR | CP | Canadian Pacific Railway |
| CRI&P | . | Chicago, Rock Island & Pacific RR |
| CS&CC | . | Colorado Springs & Cripple Creek District |
| CSL | . | Chicago Surface Lines |
| CSSSB | CSS | Chicago South Shore & South Bend RR |
| CSX | CSX | CSX Transportation |
| CSXT | CSXT | CSX Transportation |
| CTA | . | Chicago Transit Authority |
| CTDOT | CNDX | Connecticut Dept. of Transportati on |
| CUBA | . | Consolidated Railroads of Cuba - Ferrocarriles De Cuba |
| CUT | . | Cleveland Union Terminal |
| CV | CV | Central Vermont Railway |
| CZ | . | California Zephyr |
| CalNo | CFNR | California Northern Railroad |
| CofG | CG | CENTRAL of GEORGIA |
| D&H | DH | Delaware & Hudson Railroad |
| D&NE | DNE | Duluth & Northeastern Railroad |
| D&RGW | DRG | Denver & Rio Grande Western RR |
| D&RGn | DRG | Denver & Rio Grande Narrow Gauge |
| D&SL | . | Denver & Salt Lake Railroad |
| D&T | . | Dayton & Troy Electric Railway |
| D&TSL | DTS | Detroit & Toledo Shore Line RR |
| DL&W | DLW | Delaware, Lackawanna & Western RR |
| DM&IR | DMIR | Duluth, Missabe & Iron Range |
| DM&N | . | Duluth, Missabe & Northern |
| DNW&P | . | Denver, Northwestern & Pacific Rwy. (ex. D&SL) |
| DSP&P | . | Denver, South Park & Pacific |
| DSS&A | DSSA | Duluth, South Shore & Atlantic Rwy. |
| DT&I | DTI | Detroit, Toledo & Ironton RR |
| DW&P | DWC | Duluth, Winnipeg & Pacific Rwy. |
| EBTn3 | . | East Broad Top - Narrow Gauge |
| EJ&E | EJE | Elgin, Joliet & Eastern Railway |
| EMD | EMDX | Electro-Motive Division (GM) |
| ERIE | ERIE | Erie Railroad |
| ErieL | EL | Erie Lackawanna Railway |
| ErieM | . | Erie Mining Company Railroad |
| F&CCD | . | Florence & Cripple Creek District |
| FEC | FEC | Florida East Coast Railway |
| FERRO | FXE, FCM | Ferrocarril Mexicano |
| FJ&G | FJG | Fonda, Johnstown & Gloversville RR Company |
| FM | . | Fairbanks-Morse & Company |
| FORD | . | Ford Motor Co. |
| FRISC | SLSF | St. Louis - San Francisco Rwy. - SLSF - Frisco |
| FW&D | FWD | Fort Worth & Denver Railway |
| G&NR | GRN | Greenville & Northern Railway |
| G.A. | GATX | General American Marks Company |
| G.E. | GEX | General Electric Company |
| GAPC | . | General American - Pfaudler Corp. |
| GARE | . | General American Transportation Corp. |
| GARX | GARX | General American Transportation Corp. |
| GATC | . | General American Transportation Corp. |
| GBW | GBW | Green Bay & Western Railroad |
| GECX | GECX | GE Transportation Systems |
| GM | GMCX | General Motors Corporation |
| GM&O | GMO | Gulf, Mobile & Ohio Railroad |
| GMRR | GMRC | Green Mountain Railroad Co. |
| GN | GN | Great Northern Railway |
| GRS | . | Guilford Rail System |
| GTW | GTW | Grand Trunk Western Railroad |
| GW | GWR | Great Western Railway |
| HELM | HLCX | Helm Leasing Company |
| IC | IC | Illinois Central Railroad |
| ICG | ICG | Illinois Central Gulf Railroad |
| IHB | IHB | Indiana Harbor Belt Railroad |
| INT'L | . | International Car Company |
| IRR | INRD | Indiana Railroad |
| ITR | ITC | Illinois Terminal Railroad |
| ITS | . | Illinois Traction System |
| ITT | . | ITT Rayonier Railroad |
| IU | IU | Indianapolis Union Railway |
| J&L | . | Jones & Laughlin Steel Corp. |
| JNR | . | Japanese National Railroad |
| K-M | . | Krauss-Maffei |
| KCS | KCS | Kansas City Southern Railway |
| KCSdM | KCSM | Kansas City Southern de Mexico |
| KCT | KCT | Kansas City Terminal Railway |
| KO&G | KOG | Kansas, Oklahoma & Gulf Railway |
| KOPPR | KPCX | Koppers Company, Inc. |
| L&A | LA | Louisiana & Arkansas Railway |
| L&HR | LHR | Lehigh & Hudson River Railway |
| L&N | LN | Louisville & Nashville Railroad |
| L&NE | LNE | Lehigh & New England Railroad |
| L&NW | LNW | Lousiana & North West Railroad |
| L.A.R | . | Los Angeles Railway Streetcars |
| LACK | LRWY | Lackawanna Railway |
| LE&W | . | Lake Erie & Western |
| LINDE | . | Linde - Union Carbide |
| LIRR | LI | Long Island Railroad |
| LNER | . | London & North Eastern Railway |
| LOG | . | Logging Equipment |
| LOG-R | . | Logging Locomotives - Rod Type |
| LS&MS | . | Lake Shore & Michigan Southern Ry |
| LSE | . | Lake Shore Electric Railway |
| LV | LV | Lehigh Valley Railroad |
| LVT | . | Lehigh Valley Transit |
| M&StL | MSTL | Minneapolis & St. Louis Railway |
| MA&PA | MPA | Maryland & Pennsylvania Railroad |
| MACK | . | Mack Trucks |
| MAERS | MAEU | Maersk Lines |
| MARC | . | Maryland Dept. of Transportation |
| MBTA | MBTX | Massachusetts Bay Transp. Auth. |
| MEC | MEC | Maine Central Railroad |
| MESTA | . | Mesta Machine Co. |
| MILW | MILW | Milwaukee Road (See also CMSPP) |
| MISC | . | Miscellaneous / Generic Standard Gauge |
| MISCn | . | Miscellaneous / Generic Narrow Gauge |
| MKT | MKT | Missouri-Kansas-Texas Railroad (Katy) |
| MLW | . | Montreal Locomotive Works |
| MN&S | MNS | Minneapolis Northfield & Southern Railway |
| MONON | MON | Monon Railroad |
| MOPAC | MP | Missouri Pacific Railroad |
| MRL | MRL | Montana Rail Link |
| MStP& | MILZ | Minneapolis, St. Paul & Sault Ste. Marie Rwy. (Soo Line) |
| MTA | . | Metropolitan Transportation Auth. New York |
| MV | MV | Midland Valley Railroad |
| Met.N | MN, MNCW | Metro North Commuter RR (NY) |
| N&W | NW | Norfolk & Western Railway |
| N.A. | NAHX | North American Car Company |
| NAR | NAR | Northern Alberta Railroad |
| NB&Wn | . | New Berlin & Winfield Narrow Gauge |
| NC&SL | . | Nashville, Chatanooga & St. Louis Rwy. |
| NCDOT | . | North Carolina D.O.T. |
| NCn3 | . | Nevada County Narrow Gauge |
| NELSN | . | Nelson Manufacturing |
| NH | NH | New York, New Haven & Hartford RR |
| NJT | NJT, NJTR | New Jersey Transit |
| NKP | NKP | Nickle Plate Road (Also NYC&StL) |
| NOPS | . | New Orleans Public Service |
| NP | NP | Northern Pacific Railway |
| NP/BN | NP | Northern Pacific - Burlington Northern |
| NRE | NREX | National Railway Equipment Co. |
| NS | NS | Norfolk Southern Railway |
| NSWGR | . | New South Wales Government Railways |
| NSWR | . | New South Wales Railways |
| NYC | NYC | New York Central System |
| NYO&W | . | New York Ontario & Western Rwy. |
| NYRC | . | New York Railways Co. |
| NYS&W | NYSW | New York Susquehanna & Western Railway |
| NdeM | . | Nacionales de Mexico |
| O&NW | ONW | Oregon & Northwestern Railroad |
| OER | . | Oregon Electric Railway |
| OMAHA | CMO | Chicaco, St.Paul, Minneapolis & Omaha RR - (also CStPM&O; CM&O) |
| ONR | ONT, ONTA | Ontario Northland Railway |
| P&LE | PLE | Pittsburg & Lake Erie Railroad |
| P&O | . | Pennsylvania & Ohio Electric / Traction |
| P&R | . | Philadelphia & Reading Railroad |
| P&W | . | Philadelphia & Western Railway |
| P.E. | PE | Pacific Electric Railway |
| P.R. | . | Portland Railway |
| PADOT | . | Pennsylvania D.O.T |
| PC | PC | Penn Central |
| PC&F | PCFX | Pacific Car & Foundry Company |
| PCC | . | Presidents Conference Committee |
| PCR | . | Panama Canal Railway |
| PE&E | . | Portland, Eugene & Eastern Rwy. |
| PFE | PFE | Pacific Fruit Express |
| PGE | PGE, PGER | Pacific Great Eastern Railway NEW YORK |
| PHL | PHL | Pacific Harbor Line |
| PM | PM | Pere Marquette Railroad |
| PRR | PRR | Pennsylvania Railroad |
| PRSL | PRSL | Penn-Reading Seashore Line |
| PST | . | Philadelphia Suburban Trans'n Co. |
| PTC | . | Philadelphia Transit Company |
| PULLM | . | Pullman Company, Pullman Standard |
| QNS&L | . | Quebec, North Shore & Labrador Ry |
| RDG | RDG | Reading Railroad |
| REA | . | Railway Express Agency |
| REX | . | Railway Express Agency |
| RF&P | RFP | Richmond, Fredericksburg & Potomac Railroad |
| RGSn | RGS | Rio Grande Southern Narrow Gauge |
| RTNKP | . | Richmond Tank Car Company |
| RUTLD | RUT | Rutland Railroad |
| RioTN | . | Rio Tinto Mines Railway |
| S&A | SA | Savannah & Atlanta Railroad |
| S.A. | . | Saudi Arabia |
| SAL | SAL | Seaboard Air Line Railway |
| SBD | SBD | Seaboard System Railroad |
| SCL | SCL | Seaboard Coast Line Railroad |
| SDT | . | San Diego Trolley |
| SEPTA | SEPA | Southeastern Pennsylvania Transpo rtation Authority |
| SERA | SERA | Sierra Railroad |
| SLSF | SLSF | St. Louis - San Francisco Railway (Frisco) |
| SN | SN | Sacramento Northern Railway |
| SNCF | . | French National Railway Company - Societe Nationale des Chemins de |
| SOO | SOO | Soo Line Railroad |
| SP | SP | Southern Pacific Railroad |
| SP n3 | SP | Southern Pacific Narrow Gauge |
| SP&S | SPS | Spokane, Portland & Seattle Rwy. |
| SPSF | . | Southern Pacific - Santa Fe |
| SPTNO | TNO | Southern Pacific - Texas & New Orleans |
| SR | SOU | Southern Railway |
| SR&RL | . | Sandy River & Rangeley Lakes RR |
| SSR | . | Swedish State Railway |
| SSW | SSW | St. Louis Southwestern Railway also Cotton Belt |
| SVn3 | . | Sumpter Valley Narrow Gauge |
| St.PP | . | St. Paul & Pacific Railroad |
| T&M | TM | Texas Mexican Railway |
| T&P | TP | Texas & Pacific Railway |
| TARS | . | Third Avenue Railway System (NY) |
| TC | . | Tennessee Central Railway |
| TCRT | . | Twin City Rapid Transit Company |
| TCX | . | Texaco Tank Company |
| TFM | TFM | Transportacion Ferroviaria Mexica na |
| TH&B | THB | Toronto, Hamilton & Buffalo Rwy. |
| TIMKN | TRBX | Timken Roller Bearing Company |
| TMBL | TMBL | Tacoma Municipal Belt Line Rwy. |
| TRONA | TRC | Trona Railway |
| TTJX | TTX | Trailer Train Co. |
| TWEET | . | Tweetsie Railroad |
| U.P. | UP | Union Pacific Railroad |
| U.P.V | . | U.P. Valley |
| UINTA | . | Uintah Railway |
| URR | URR | Union Railroad (Pittsburgh, PA) |
| URTX | URTX | General American Transportation Corp. |
| USA | USAX | U.S. Army |
| USRA | . | United States Railroad Admin. |
| UTAH | UTAH | Utah Railway |
| UTLX | UTLX | Union Tank Company (GRAMPS) |
| V&T | VT | Virginia & Truckee Railroad |
| VE | VE | Visalia Electric Railroad |
| VIA | . | Via Rail (Canada) |
| VIRG | VGN | Virginian Railway |
| VTR | VTR | Vermont Railway |
| W&LE | WE, WLE | Wheeling & Lake Erie Railroad |
| W&W | . | Wilmington & Weldon Railway |
| WA&G | WAG | Wellsville, Addison & Galeton RR |
| WABAS | WAB | Wabash Railway |
| WATC | WATC | Washington Terminal Company |
| WC | WC | Wisconsin Central Railway |
| WC&F | . | Waterloo, Cedar Falls & Northern RR |
| WM | WM | Western Maryland Railway |
| WP | WP | Western Pacific Railroad |
| WP&Yn | WPY | White Pass & Yukon Route Narrow Gauge |
| YV | YV | Yosemite Valley Railroad |
| YVT | YV | Yakima Valley Transportation Co. |