AOK
| Arkansas-Oklahoma Railroad | 7 |
ATW
| Atlantic and Western | 14 |
BCOL
| Canadian National Railways | 16 |
BNSF
| BNSF Railway | 14 |
BR
| Buffalo and Pittsburgh | 1 |
CBRY
| Copper Basin Railway | 5 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CN
| Canadian National Railways | 23 |
CNA
| Canadian National Railways | 2 |
COER
| Crab Orchard & Egyptian | 4 |
CSX
| CSX Railroad | 3 |
DWC
| Canadian National Railways | 3 |
FDDM
| Fort Dodge Des Moines & Southern | 1 |
FURX
| First Union Rail | 1 |
GNRR
| Georgia Northeastern | 1 |
GTW
| Grand Trunk Western | 3 |
HLSC
| Hampton Railway Incorporated | 11 |
IANR
| Iowa Northern Ry | 1 |
IC
| Illinois Central | 3 |
LW
| Louisville and Wadley Railway Company | 1 |
MMA
| Montreal, Maine & Atlantic | 3 |
NDYX
| First Union Rail | 7 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 24 |
NS
| Norfolk Southern | 5 |
SMW
| St Marys Railway West LLC | 7 |
SOO
| Soo Line | 8 |
TR
| Tomahawk Railway L.P. | 29 |
TTZX
| TTX Company-Centerbeam Flats | 147 |
UCRY
| Utah Central | 1 |
UP
| Union Pacific Railroad Company | 5 |
WC
| Wisconsin Central | 5 |
WRWK
| Providence & Worchester Railroad | 2 |