ATW
| Atlantic and Western | 2 |
BKTY
| Union Pacific Railroad Company | 2 |
BNSF
| BNSF Railway | 3 |
CN
| Canadian National Railways | 1 |
CO
| Chesapeake & Ohio | 1 |
COER
| Crab Orchard & Egyptian | 1 |
CSX
| CSX Railroad | 2 |
CV
| Central Vermont | 1 |
FBOX
| TTX Company | 2 |
GNRR
| Georgia Northeastern | 5 |
HS
| H and S Railroad Company | 1 |
KCS
| Kansas City Southern | 1 |
LRS
| Laurinburg and Southern | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
NS
| Norfolk Southern | 4 |
SMW
| St Marys Railway West LLC | 1 |
SOU
| Southern | 2 |
TBOX
| TTX Company | 12 |