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|
| A |
Alton Railroad |
| AA |
Ann Arbor Railroad |
| AAR |
Association of American Railroads |
| AB |
Akron Barberton Cluster Railway |
| ABB |
Akron and Barberton Belt Railroad |
| ABCK |
Alaska British Columbia Transportation Company |
| ABL |
Alameda Belt Line |
| ABM |
Texas and Pacific Railway → Missouri Pacific Railroad |
| ABN |
Alabama Northern Railway → Ashland Railway |
| ABPR |
Aberdeen and Briar Patch Railway → Aberdeen, Carolina and Western Railway |
| ABR |
Athens Line |
| ABS |
Alabama Southern Railroad |
| AC |
Algoma Central and Hudson Bay Railway → Algoma Central Railway |
| ACBL |
American Commercial Barge Lines |
| ACFX |
General Electric Rail Services Corporation |
| ACIS |
Algoma Central Railway |
| ACJR |
Ashtabula, Carson and Jefferson Railroad |
| ACL |
Atlantic Coast Line Railroad → Seaboard Coast Line Railroad → Seaboard System Railroad → CSX Transportation |
| ACRC |
Andalusia and Conecuh Railroad |
| ACWR |
Aberdeen, Carolina and Western Railway |
| ACY |
Akron, Canton and Youngstown Railroad → Norfolk and Western Railway → Norfolk Southern Railway |
| AD |
Atlantic and Danville Railway → Norfolk, Franklin and Danville Railway |
| ADBF |
Adrian and Blissfield Railroad |
| ADIR |
Adirondack Railway |
| ADN |
Ashley, Drew and Northern Railway → Arkansas, Louisiana and Mississippi Railroad |
| AE |
Arizona Eastern Railroad |
| AEC |
Atlantic and East Carolina Railway |
| AEFR |
Aurora, Elgin and Fox River Electric |
| AER |
Algoma Eastern Railway |
| AERC |
Albany and Eastern Railroad |
| AF |
Alabama and Florida Railway |
| AFLR |
Alabama and Florida Railroad |
| AG |
Abbeville-Grimes Railway → A&G Railroad → Bay Line Railroad |
| AG |
Galveston Railroad |
| AGCR |
Alamo Gulf Coast Railroad |
| AGLF |
Atlantic and Gulf Railroad → Knoxville and Holston River Railroad |
| AGR |
Alabama and Gulf Coast Railway |
| AGRD |
A&G Railroad |
| AGS |
Alabama Great Southern Railroad |
| AGW !A&GW |
Alberta and Great Waterways Railway |
| AHT |
Alaska Hydro-Train |
| AHW |
Ahnapee and Western Railway → Fox Valley and Western Ltd. |
| AIRI |
Alabama Industrial Railroad |
| AJ |
Alma and Jonquieres Railway |
| AJR |
Artemus-Jellico Railroad |
| AKC |
Arkansas Central Railroad |
| AKDN |
Acadiana Railway |
| AKMD |
Arkansas Midland Railroad |
| AL |
Almanor Railroad |
| ALAB |
Alabama Railroad |
| ALG !AL&G |
Arkansas, Louisiana and Gulf Railway |
| ALM |
Arkansas and Louisiana Midland Railway → Arkansas and Louisiana Missouri Railway → Arkansas, Louisiana and Mississippi Railroad |
| ALQS |
Aliquippa and Southern Railroad |
| ALS |
Alton and Southern Railroad → Alton and Southern Railway |
| ALT |
Airlake Terminal Railway |
| ALU |
Alcolu Railroad |
| ALY |
Allegheny Railroad → Allegheny and Eastern Railroad |
| AM !A&M |
Alabama and Mississippi Railroad |
| AM |
Arkansas and Missouri Railroad |
| AMC |
Amador Central Railroad |
| AMC |
Arkansas, Louisiana and Mississippi Railroad |
| AMHR |
Amherst Industries → Landisville Railroad |
| AMR |
Arcata and Mad River Railroad |
| AMT |
Agence métropolitaine de transport (Montréal, Québec) |
| AMTK |
Amtrak (National Railroad Passenger Corporation) |
| AN |
Apalachicola Northern Railroad → AN Railway |
| ANC |
Atlantic and North Carolina Railroad |
| ANN !AN&N |
Anthony and Northern Railway |
| ANR |
Angelina and Neches River Railroad |
| ANY |
Athabasca Northern Railway |
| AO |
Appalachian and Ohio Railroad |
| AOK |
Arkansas-Oklahoma Railroad |
| AOR |
Aliquippa and Ohio River Railroad |
| APA |
Apache Railway |
| APD |
Albany Port District |
| APNC |
Appanoose County Community Railroad |
| AR |
Aberdeen and Rockfish Railroad |
| ARA |
Arcade and Attica Railroad |
| ARC |
Alexander Railroad |
| ARDP |
Missouri Pacific Railroad → Union Pacific Railroad |
| ARE |
A&R Line |
| ARMH |
Missouri Pacific Railroad → Union Pacific Railroad |
| ARMN |
Missouri Pacific Railroad → Union Pacific Railroad |
| ARN |
Alberta RailNet → Canadian National Railway |
| ARR |
Alaska Railroad |
| ARRG |
Altra Railroad |
| ARS |
Arkansas Southern Railroad |
| ARW |
Arkansas Western Railway |
| ARZC |
Arizona and California Railroad |
| AS |
Abilene and Southern Railway → Missouri Pacific Railroad |
| ASA !A&SA |
Atlanta and St. Andrews Bay Railway |
| ASAB |
Atlanta and St. Andrews Bay Railway → Bay Line Railroad |
| ASDA |
Asbestos and Danville Railway |
| ASML |
Atlanta, Stone Mountain and Lithonia Railway |
| ASR |
Allegheny Southern Railroad |
| ASRW |
Allegheny Southern Railway |
| ASRY |
Ashland Railway |
| ATCO |
Arnold Transit |
| ATLT |
AT&L Railroad |
| ATR |
Alliance Terminal Railroad |
| ATRW |
Anthracite Railway |
| ATSF |
Atchison, Topeka and Santa Fe Railway → BNSF Railway |
| ATW |
Atlantic and Western Railway |
| AUAR |
Austin Area Terminal Railroad |
| AUG |
Augusta Railroad |
| AUNW |
Austin and Northwestern Railroad |
| AUS |
Augusta Southern Railroad |
| AUS |
Augusta and Summerville Railroad |
| AV !A&V |
Alabama and Vicksburg Railway |
| AVL |
Aroostook Valley Railroad |
| AVR |
Allegheny Valley Railroad |
| AW !A&W |
Alexandria and Western Railway |
| AW |
Ahnapee and Western Railway |
| AWP |
Atlanta and West Point Railroad → Seaboard System Railroad → CSX Transportation |
| AWRR |
Austin Western Railroad |
| AWW |
Algers, Winslow and Western Railway |
| AYSS |
Allegheny and South Side Railway |
| AZER |
Arizona Eastern Railway |
| AZS |
Arizona Southern Railroad |