AM
| Arkansas & Missouri | 1 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
ATW
| Atlantic and Western | 5 |
BCOL
| Canadian National Railways | 5 |
CAGY
| Columbus & Greenville Railway | 2 |
CN
| Canadian National Railways | 1 |
COER
| Crab Orchard & Egyptian | 1 |
CSX
| CSX Railroad | 2 |
DWC
| Canadian National Railways | 5 |
FURX
| First Union Rail | 5 |
HLSC
| Hampton Railway Incorporated | 1 |
IC
| Illinois Central | 1 |
LRS
| Laurinburg and Southern | 1 |
MSRC
| Kansas City Southern | 7 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 109 |
SERA
| Sierra Northern Railway | 1 |
SMW
| St Marys Railway West LLC | 5 |
SOO
| Soo Line | 4 |
TNER
| Texas Northeastern Division Mid-Michigan | 1 |
TR
| Tomahawk Railway L.P. | 3 |
TTZX
| TTX Company-Centerbeam Flats | 130 |
UP
| Union Pacific Railroad Company | 2 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 2 |