AOK
| Arkansas-Oklahoma Railroad | 13 |
ATW
| Atlantic and Western | 4 |
BCOL
| Canadian National Railways | 13 |
BNSF
| BNSF Railway | 5 |
CBRY
| Copper Basin Railway | 3 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CN
| Canadian National Railways | 10 |
CNA
| Canadian National Railways | 1 |
CNIS
| Canadian National Railways | 4 |
COER
| Crab Orchard & Egyptian | 2 |
CRLE
| Coe Rail Incorporated | 2 |
CSX
| CSX Railroad | 1 |
DWC
| Canadian National Railways | 9 |
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 | 8 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 9 |
KLRX
| KOCH RAIL LLC | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
MWNX
| MWNX | 2 |
NOKL
| Northwestern Oklahoma | 29 |
NS
| Norfolk Southern | 4 |
RVPR
| Riverport R.R., L.L.C. | 1 |
SERA
| Sierra Northern Railway | 6 |
SMW
| St Marys Railway West LLC | 7 |
SOO
| Soo Line | 8 |
TKEN
| Tennken Railroad Company Incorporated | 1 |
TR
| Tomahawk Railway L.P. | 4 |
TTZX
| TTX Company-Centerbeam Flats | 93 |
UCRY
| Utah Central | 5 |
UP
| Union Pacific Railroad Company | 42 |
WC
| Wisconsin Central | 7 |
WPRR
| Willamette and Pacific | 2 |
WRWK
| Providence & Worchester Railroad | 19 |