ACL
| Atlantic Coast Line | 2 |
AEX
| Andersons | 3 |
ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 2 |
CLSX
| Cargill Incorporated Salt Division | 1 |
CMPX
| Compass Capitol Corporation | 1 |
CR
| Conrail | 1 |
CSX
| CSX Railroad | 4 |
FURX
| First Union Rail | 2 |
GACX
| General American Marks Company | 1 |
GFSX
| General American Marks Company | 1 |
ITC
| Illinois Terminal Railroad | 2 |
MKTT
| Union Pacific Railroad Company | 1 |
MOCX
| THE MOSAIC COMPANY | 2 |
MWCX
| Midwest Railcar Corporation | 1 |
NDYX
| First Union Rail | 1 |
NS
| Norfolk Southern | 1 |
NW
| Norfolk & Western | 3 |
RFP
| Richmond Fredericksburg & Potomac | 1 |
RRRX
| Rex Leasing Incorporated | 1 |
SIRX
| Southern Illinois Railcar Company | 2 |
SOO
| Soo Line | 1 |
SOU
| Southern | 2 |
UELX
| ADM Transportation Company | 1 |
USLX
| General Electric Rail Services | 1 |