ACL
| Atlantic Coast Line | 1 |
AMTK
| Amtrak | 1 |
CPOX
| Consumers Power Company (Mich.) | 1 |
CSX
| CSX Railroad | 4 |
DOTX
| USDOT/Federal Railroad Administration | 2 |
SAL
| Seaboard Air Line | 1 |
SCFE
| South Central Florida Express Incorporated | 2 |
SCL
| Seaboard Coast Line | 1 |
SOU
| Southern | 1 |
TEXX
| TEXX | 1 |
TVRM
| Tennessee Valley | 1 |
USA
| USA | 1 |