AOK
| Arkansas-Oklahoma Railroad | 10 |
ATW
| Atlantic and Western | 15 |
BCOL
| Canadian National Railways | 7 |
BN
| Burlington Northern | 4 |
BNSF
| BNSF Railway | 17 |
CAGY
| Columbus & Greenville Railway | 2 |
CBRY
| Copper Basin Railway | 1 |
CN
| Canadian National Railways | 17 |
CNIS
| Canadian National Railways | 1 |
CRLE
| Coe Rail Incorporated | 1 |
DWC
| Canadian National Railways | 11 |
GNRR
| Georgia Northeastern | 2 |
GTW
| Grand Trunk Western | 1 |
HLSC
| Hampton Railway Incorporated | 5 |
HPTX
| HAMPTON CAPITAL LLC | 2 |
IC
| Illinois Central | 5 |
KCS
| Kansas City Southern | 1 |
LRS
| Laurinburg and Southern | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MSRC
| Kansas City Southern | 10 |
NOKL
| Northwestern Oklahoma | 18 |
NS
| Norfolk Southern | 8 |
SGLR
| Seminole Gulf | 3 |
SOO
| Soo Line | 5 |
SRY
| Southern Railway of British Columbia Lim | 6 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 1 |
TR
| Tomahawk Railway L.P. | 1 |
TTZX
| TTX Company-Centerbeam Flats | 37 |
UP
| Union Pacific Railroad Company | 7 |
WC
| Wisconsin Central | 7 |
WCRC
| Washington Central | 9 |
WCTR
| WCTU Company White City Terminal Railway | 2 |