AOK
| Arkansas-Oklahoma Railroad | 12 |
ATW
| Atlantic and Western | 4 |
BCOL
| Canadian National Railways | 13 |
CBRY
| Copper Basin Railway | 2 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CN
| Canadian National Railways | 9 |
CNA
| Canadian National Railways | 1 |
CNIS
| Canadian National Railways | 4 |
CRLE
| Coe Rail Incorporated | 2 |
DWC
| Canadian National Railways | 8 |
FCEN
| Florida Central | 1 |
FDDM
| Fort Dodge Des Moines & Southern | 14 |
GAEX
| General American Marks Company | 1 |
GNRR
| Georgia Northeastern | 5 |
GTW
| Grand Trunk Western | 2 |
HE
| Hollis and Eastern Railroad Company | 5 |
HLSC
| Hampton Railway Incorporated | 7 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 8 |
KLRX
| KOCH RAIL LLC | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MWNX
| MWNX | 2 |
NOKL
| Northwestern Oklahoma | 27 |
NS
| Norfolk Southern | 4 |
RVPR
| Riverport R.R., L.L.C. | 1 |
SERA
| Sierra Northern Railway | 5 |
SMW
| St Marys Railway West LLC | 6 |
SOO
| Soo Line | 7 |
TKEN
| Tennken Railroad Company Incorporated | 1 |
TR
| Tomahawk Railway L.P. | 2 |
TTZX
| TTX Company-Centerbeam Flats | 79 |
UCRY
| Utah Central | 4 |
UP
| Union Pacific Railroad Company | 38 |
WC
| Wisconsin Central | 6 |
WPRR
| Willamette and Pacific | 2 |
WRWK
| Providence & Worchester Railroad | 14 |