ATSF
| Atchison Topeka & Santa Fe | 1 |
ATW
| Atlantic and Western | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 10 |
CMHX
| CarMath Incorporated | 1 |
CP
| Canadian Pacific Railway | 1 |
CR
| Conrail | 2 |
CSS
| Chicago South Shore And South Bend | 1 |
CSX
| CSX Railroad | 2 |
EJE
| Elgin Joliet and Eastern | 1 |
GBRX
| Greenbrier Leasing Corporation | 6 |
GN
| Great Northern | 1 |
GNTX
| TTX Company | 1 |
GONX
| Railgon Company | 1 |
GWWR
| Gateway Western | 1 |
HPJX
| Helm-Pacific Leasing | 5 |
KCS
| Kansas City Southern | 2 |
LT
| Lake Terminal Railroad Company | 2 |
MP
| Missouri Pacific | 1 |
MRL
| Montana Rail Link | 31 |
MWCX
| Midwest Railcar Corporation | 2 |
NDYX
| First Union Rail | 1 |
NP
| Northern Pacific | 6 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 3 |
PGEX
| Portland General Electric Company | 1 |
RMDX
| American Refrigerator Transit Company | 1 |
SIEX
| Southeastern Industrial Enterprises Incorporated | 2 |
SP
| Southern Pacific | 1 |
SSTX
| Schnitzer Steel | 1 |
UFIX
| NRG Energy | 1 |
UP
| Union Pacific Railroad Company | 1 |