AOK
| Arkansas-Oklahoma Railroad | 21 |
ATW
| Atlantic and Western | 3 |
BNSF
| BNSF Railway | 21 |
CN
| Canadian National Railways | 1 |
COER
| Crab Orchard & Egyptian | 1 |
CRLE
| Coe Rail Incorporated | 3 |
FBOX
| TTX Company | 7 |
GTW
| Grand Trunk Western | 2 |
KCS
| Kansas City Southern | 4 |
LRS
| Laurinburg and Southern | 5 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 7 |
NOKL
| Northwestern Oklahoma | 1 |
QGRY
| Quebec Gatineau Railway Incorporated | 1 |
SLR
| St Lawrence & Atlantic | 6 |
TR
| Tomahawk Railway L.P. | 1 |
UCRY
| Utah Central | 1 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 1 |