AGR
| Alabama and Gulf Coast | 2 |
BCOL
| Canadian National Railways | 1 |
BNSF
| BNSF Railway | 2 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
CSX
| CSX Railroad | 1 |
DRGW
| Denver & Rio Grande Western | 2 |
EEC
| East Erie Commercial Railroad | 1 |
FBOX
| TTX Company | 3 |
FCRD
| First Coast Railway | 1 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
HLMX
| Helm Financial Corporation | 1 |
KCS
| Kansas City Southern | 1 |
SGLR
| Seminole Gulf | 1 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 1 |
SRY
| Southern Railway of British Columbia Lim | 1 |
TBOX
| TTX Company | 1 |