ATW
| Atlantic and Western | 2 |
CNA
| Canadian National Railways | 3 |
CSX
| CSX Railroad | 292 |
ELFX
| Electric Fuels Corporation (Fla.) | 90 |
GALX
| Georgia Power Company | 2 |
GSTX
| Georgia Power Company | 46 |
IC
| Illinois Central | 54 |
IPSX
| General American Marks Company | 12 |
ITGX
| Andersons - Railgroup | 3 |
MRDX
| MidAmerican Energy Company | 1 |
NIHX
| General Electric Rail Services | 4 |
OMAX
| Omaha Public Power District | 7 |
OUCX
| Orlando Utilities Commission (Fla.) | 1 |
RMGX
| Andersons - Railgroup | 1 |
SOU
| Southern | 6 |
TNHR
| Three Notch Railroad | 22 |
VULX
| Vulcan Materials | 24 |