AOK
| Arkansas-Oklahoma Railroad | 1 |
BN
| Burlington Northern | 1 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 4 |
FURX
| First Union Rail | 1 |
ITLX
| General Electric Rail Services | 1 |
LN
| Louisville & Nashville | 1 |
MWCX
| Midwest Railcar Corporation | 2 |
RFMX
| Caldwell-Baker Company | 2 |
RFP
| Richmond Fredericksburg & Potomac | 1 |