AERC
| Albany and Eastern Railroad Company | 1 |
ATW
| Atlantic and Western | 1 |
BCOL
| Canadian National Railways | 4 |
BNSF
| BNSF Railway | 8 |
CBRY
| Copper Basin Railway | 1 |
CN
| Canadian National Railways | 2 |
CRLE
| Coe Rail Incorporated | 1 |
DWC
| Canadian National Railways | 2 |
GNRR
| Georgia Northeastern | 3 |
GTW
| Grand Trunk Western | 3 |
HLSC
| Hampton Railway Incorporated | 3 |
HPTX
| HAMPTON CAPITAL LLC | 1 |
IANR
| Iowa Northern Ry | 2 |
IC
| Illinois Central | 2 |
NDYX
| First Union Rail | 1 |
NS
| Norfolk Southern | 1 |
SGLR
| Seminole Gulf | 1 |
SMW
| St Marys Railway West LLC | 2 |
SOO
| Soo Line | 5 |
TR
| Tomahawk Railway L.P. | 4 |
TTZX
| TTX Company-Centerbeam Flats | 3 |
UCRY
| Utah Central | 2 |
UP
| Union Pacific Railroad Company | 6 |
WC
| Wisconsin Central | 3 |
WCRC
| Washington Central | 4 |
WRWK
| Providence & Worchester Railroad | 1 |