AMTK
| Amtrak | 18 |
BO
| Baltimore & Ohio | 6 |
CG
| Central Of Georgia | 1 |
CO
| Chesapeake & Ohio | 3 |
GANO
| Georgia Northern Railway Company | 1 |
MARC
| Maryland Transit Administration | 5 |
NCTM
| NCTM | 4 |
NS
| Norfolk Southern | 1 |
PPCX
| AAPRCO Register Private Cars | 2 |
PULL
| Pullman | 1 |
SOU
| Southern | 2 |
VRE
| Virginia Railway Express | 2 |