BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 9 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CN
| Canadian National Railways | 1 |
CRLE
| Coe Rail Incorporated | 2 |
FBOX
| TTX Company | 12 |
HS
| H and S Railroad Company | 2 |
LRS
| Laurinburg and Southern | 1 |
MILW
| Milwaukee Road | 3 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 3 |
NOKL
| Northwestern Oklahoma | 3 |
QC
| Quebec Central | 2 |
TOE
| Texas Oklahoma and Eastern RR Company | 2 |
TR
| Tomahawk Railway L.P. | 3 |
UP
| Union Pacific Railroad Company | 5 |
WFRX
| WELLS FARGO RAIL CORPORATION | 1 |
WRWK
| Providence & Worchester Railroad | 2 |