AM
| Arkansas & Missouri | 1 |
AOK
| Arkansas-Oklahoma Railroad | 13 |
ATW
| Atlantic and Western | 4 |
BCOL
| Canadian National Railways | 1 |
BNSF
| BNSF Railway | 3 |
CBRY
| Copper Basin Railway | 1 |
CN
| Canadian National Railways | 6 |
COER
| Crab Orchard & Egyptian | 2 |
DWC
| Canadian National Railways | 14 |
FDDM
| Fort Dodge Des Moines & Southern | 6 |
FURX
| First Union Rail | 1 |
GAEX
| General American Marks Company | 2 |
GNRR
| Georgia Northeastern | 3 |
GTW
| Grand Trunk Western | 1 |
HE
| Hollis and Eastern Railroad Company | 2 |
HLSC
| Hampton Railway Incorporated | 2 |
HPTX
| HAMPTON CAPITAL LLC | 1 |
IANR
| Iowa Northern Ry | 1 |
IC
| Illinois Central | 3 |
LSTX
| LSTX | 1 |
NOKL
| Northwestern Oklahoma | 17 |
NS
| Norfolk Southern | 2 |
ONT
| Ontario Northland Railway | 1 |
RVPR
| Riverport R.R., L.L.C. | 2 |
SMW
| St Marys Railway West LLC | 2 |
SOO
| Soo Line | 10 |
TR
| Tomahawk Railway L.P. | 3 |
TTZX
| TTX Company-Centerbeam Flats | 39 |
UCRY
| Utah Central | 2 |
UP
| Union Pacific Railroad Company | 9 |
WC
| Wisconsin Central | 3 |
WCRC
| Washington Central | 1 |
WRWK
| Providence & Worchester Railroad | 4 |