AMTK
| Amtrak | 30 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
LN
| Louisville & Nashville | 1 |
MARC
| Maryland Transit Administration | 3 |
METX
| METRA | 1 |
MNCR
| Metro North Commuter Railway | 1 |
MNRR
| Modoc Northern Railroad Company | 2 |
NJT
| New Jersey Transit | 16 |
NYC
| New York Central | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 2 |
VIA
| Via Rail Canada | 1 |
VRE
| Virginia Railway Express | 5 |
VRIC
| Virginia Rail Investment | 1 |