AERC
| Albany and Eastern Railroad Company | 5 |
AGR
| Alabama and Gulf Coast | 5 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AOK
| Arkansas-Oklahoma Railroad | 5 |
BAEX
| Andersons | 1 |
BCIT
| Canadian National Railways | 1 |
BNSF
| BNSF Railway | 1 |
CIC
| Cedar Rapids & Iowa City | 1 |
CN
| Canadian National Railways | 1 |
CNA
| Canadian National Railways | 3 |
COP
| City of Prineville Railway | 8 |
CP
| Canadian Pacific Railway | 1 |
CPAA
| Canadian Pacific Railway | 2 |
CSX
| CSX Railroad | 3 |
CVC
| Canadian National Railways | 1 |
DLWR
| Depew Lancaster and Western Railroad Com | 1 |
DWC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 2 |
FBOX
| TTX Company | 1 |
FXE
| Ferromex | 1 |
GLSR
| Gloster Southern Railroad Corporation | 1 |
GN
| Great Northern | 1 |
HPJX
| Helm-Pacific Leasing | 1 |
HS
| H and S Railroad Company | 4 |
ICG
| Illinois Central Gulf | 1 |
KCS
| Kansas City Southern | 1 |
MP
| Missouri Pacific | 1 |
MRL
| Montana Rail Link | 19 |
MSDR
| Knoxville & Holston River Railroad | 1 |
NAR
| Northern Alberta Railways | 2 |
NYC
| New York Central | 1 |
ONT
| Ontario Northland Railway | 1 |
PDRR
| Pee Dee River RR | 1 |
PHD
| Port Huron and Detroit Railroad Company | 1 |
SIRX
| Southern Illinois Railcar Company | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 3 |
TBOX
| TTX Company | 1 |
WIIX
| Williamette Industries Incorporated | 8 |
WLO
| Waterloo Railway Company (Illinois Central) | 2 |
WSOR
| Wisconsin & Southern | 1 |
YARR
| Youngstown and Austintown Railroad | 1 |
YB
| Youngstown Belt Railroad Company | 1 |