AOK
| Arkansas-Oklahoma Railroad | 3 |
ATW
| Atlantic and Western | 3 |
BCOL
| Canadian National Railways | 7 |
BNSF
| BNSF Railway | 4 |
CN
| Canadian National Railways | 3 |
CNIS
| Canadian National Railways | 1 |
COER
| Crab Orchard & Egyptian | 4 |
DWC
| Canadian National Railways | 6 |
FDDM
| Fort Dodge Des Moines & Southern | 1 |
FURX
| First Union Rail | 5 |
GNRR
| Georgia Northeastern | 1 |
GTW
| Grand Trunk Western | 4 |
HLSC
| Hampton Railway Incorporated | 1 |
IC
| Illinois Central | 1 |
NDYX
| First Union Rail | 4 |
NHLX
| NHLX | 1 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 3 |
NYDX
| NYDX | 1 |
ONT
| Ontario Northland Railway | 1 |
SMW
| St Marys Railway West LLC | 3 |
SOO
| Soo Line | 6 |
TR
| Tomahawk Railway L.P. | 4 |
TTZX
| TTX Company-Centerbeam Flats | 31 |
WC
| Wisconsin Central | 4 |
WRWK
| Providence & Worchester Railroad | 2 |