AOK
| Arkansas-Oklahoma Railroad | 64 |
ATW
| Atlantic and Western | 57 |
BAR
| Bangor & Aroostook | 1 |
BCIT
| Canadian National Railways | 3 |
BCOL
| Canadian National Railways | 47 |
BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 15 |
CBRY
| Copper Basin Railway | 5 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CN
| Canadian National Railways | 103 |
CNA
| Canadian National Railways | 2 |
CNIS
| Canadian National Railways | 12 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 2 |
CRLE
| Coe Rail Incorporated | 1 |
CSX
| CSX Railroad | 1 |
DWC
| Canadian National Railways | 63 |
FDDM
| Fort Dodge Des Moines & Southern | 4 |
GNRR
| Georgia Northeastern | 5 |
GTW
| Grand Trunk Western | 21 |
HLSC
| Hampton Railway Incorporated | 9 |
IANR
| Iowa Northern Ry | 4 |
IC
| Illinois Central | 14 |
LRS
| Laurinburg and Southern | 3 |
LW
| Louisville and Wadley Railway Company | 2 |
MEC
| Maine Central | 2 |
MMA
| Montreal, Maine & Atlantic | 14 |
NDYX
| First Union Rail | 33 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 47 |
NS
| Norfolk Southern | 96 |
RVPR
| Riverport R.R., L.L.C. | 3 |
SDIX
| Steel Dynamics, Inc | 4 |
SGLR
| Seminole Gulf | 5 |
SMW
| St Marys Railway West LLC | 23 |
SOO
| Soo Line | 16 |
TR
| Tomahawk Railway L.P. | 1 |
TTZX
| TTX Company-Centerbeam Flats | 128 |
UCIR
| Union County Industrial Railroad | 5 |
UCRY
| Utah Central | 12 |
UP
| Union Pacific Railroad Company | 7 |
WC
| Wisconsin Central | 51 |
WRWK
| Providence & Worchester Railroad | 19 |
YARR
| Youngstown and Austintown Railroad | 5 |