ATW
| Atlantic and Western | 1 |
BAYL
| Bay Line, LLC | 1 |
CNA
| Canadian National Railways | 3 |
CNIS
| Canadian National Railways | 1 |
COER
| Crab Orchard & Egyptian | 5 |
CRLE
| Coe Rail Incorporated | 4 |
CSX
| CSX Railroad | 8 |
CV
| Central Vermont | 2 |
DWC
| Canadian National Railways | 5 |
FBOX
| TTX Company | 1 |
IC
| Illinois Central | 4 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 2 |
LRS
| Laurinburg and Southern | 2 |
LW
| Louisville and Wadley Railway Company | 4 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 6 |
SRY
| Southern Railway of British Columbia Lim | 1 |
TR
| Tomahawk Railway L.P. | 1 |
WC
| Wisconsin Central | 9 |
YKR
| York Rail | 2 |