AOK
| Arkansas-Oklahoma Railroad | 9 |
ATW
| Atlantic and Western | 5 |
BCIT
| Canadian National Railways | 1 |
BCOL
| Canadian National Railways | 27 |
CBRY
| Copper Basin Railway | 3 |
CN
| Canadian National Railways | 13 |
CNA
| Canadian National Railways | 4 |
CNIS
| Canadian National Railways | 4 |
CSX
| CSX Railroad | 1 |
DWC
| Canadian National Railways | 12 |
GNRR
| Georgia Northeastern | 5 |
GTW
| Grand Trunk Western | 15 |
IC
| Illinois Central | 2 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
NOKL
| Northwestern Oklahoma | 12 |
RVPR
| Riverport R.R., L.L.C. | 3 |
SMW
| St Marys Railway West LLC | 11 |
TTZX
| TTX Company-Centerbeam Flats | 17 |
UCIR
| Union County Industrial Railroad | 1 |
UCRY
| Utah Central | 6 |
WC
| Wisconsin Central | 7 |
WRWK
| Providence & Worchester Railroad | 5 |