AGR
| Alabama and Gulf Coast | 2 |
ATW
| Atlantic and Western | 2 |
BAYL
| Bay Line, LLC | 2 |
BKTY
| Union Pacific Railroad Company | 7 |
BNSF
| BNSF Railway | 1 |
CNW
| Chicago & Northwestern | 1 |
EEC
| East Erie Commercial Railroad | 5 |
FCRD
| First Coast Railway | 1 |
GMRC
| Green Mountain RR | 2 |
GNRR
| Georgia Northeastern | 1 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 12 |
LRS
| Laurinburg and Southern | 3 |
MB
| Meridian & Bigbee | 1 |
MDW
| Minnesota Dakota and Western Railway Com | 1 |
MEC
| Maine Central | 13 |
MRL
| Montana Rail Link | 3 |
MSDR
| Knoxville & Holston River Railroad | 1 |
NS
| Norfolk Southern | 1 |
SNC
| Saratoga & North Creek Railway | 1 |
SOU
| Southern | 1 |
SRN
| Sabine River & Northern | 2 |
WRWK
| Providence & Worchester Railroad | 2 |