ABOX
| TTX Company | 2 |
BAEX
| Andersons | 1 |
BCOL
| Canadian National Railways | 1 |
BM
| Boston & Maine | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 1 |
CN
| Canadian National Railways | 2 |
CNA
| Canadian National Railways | 1 |
CNIS
| Canadian National Railways | 2 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 1 |
CPAA
| Canadian Pacific Railway | 1 |
CR
| Conrail | 4 |
CSX
| CSX Railroad | 7 |
CUOH
| Columbus and Ohio River Railroad Company | 4 |
DWC
| Canadian National Railways | 1 |
FBOX
| TTX Company | 2 |
FXE
| Ferromex | 1 |
GMRC
| Green Mountain RR | 4 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GTRA
| Golden Triangle Railroad | 1 |
IBT
| International Bridge and Terminal Company | 3 |
IC
| Illinois Central | 1 |
ITFX
| INFINITY TRANSPORTATION III LLC | 1 |
KCS
| Kansas City Southern | 2 |
MEC
| Maine Central | 2 |
MP
| Missouri Pacific | 7 |
MQT
| Marquette Rail | 4 |
MWCX
| Midwest Railcar Corporation | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NS
| Norfolk Southern | 10 |
NW
| Norfolk & Western | 3 |
PDRR
| Pee Dee River RR | 1 |
RBOX
| Railbox Company | 3 |
SMW
| St Marys Railway West LLC | 1 |
SOU
| Southern | 5 |
SP
| Southern Pacific | 4 |
SRY
| Southern Railway of British Columbia Lim | 1 |
TBOX
| TTX Company | 1 |
UP
| Union Pacific Railroad Company | 3 |
WCOR
| Wellsboro and Corning Railroad Company | 1 |
YKR
| York Rail | 2 |