AOK
| Arkansas-Oklahoma Railroad | 7 |
ATW
| Atlantic and Western | 2 |
BCOL
| Canadian National Railways | 3 |
BNSF
| BNSF Railway | 3 |
CBRY
| Copper Basin Railway | 2 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CN
| Canadian National Railways | 7 |
CP
| Canadian Pacific Railway | 2 |
CRLE
| Coe Rail Incorporated | 1 |
DWC
| Canadian National Railways | 5 |
FURX
| First Union Rail | 1 |
GNRR
| Georgia Northeastern | 1 |
GTW
| Grand Trunk Western | 1 |
HLSC
| Hampton Railway Incorporated | 2 |
IANR
| Iowa Northern Ry | 1 |
IBT
| International Bridge and Terminal Company | 2 |
IC
| Illinois Central | 2 |
KLRX
| KOCH RAIL LLC | 2 |
LRS
| Laurinburg and Southern | 1 |
LW
| Louisville and Wadley Railway Company | 1 |
MMA
| Montreal, Maine & Atlantic | 1 |
NDYX
| First Union Rail | 1 |
NOKL
| Northwestern Oklahoma | 9 |
NS
| Norfolk Southern | 13 |
SOO
| Soo Line | 7 |
TR
| Tomahawk Railway L.P. | 2 |
TTZX
| TTX Company-Centerbeam Flats | 22 |
UP
| Union Pacific Railroad Company | 4 |
WCRC
| Washington Central | 1 |
WPRR
| Willamette and Pacific | 1 |