AGR
| Alabama and Gulf Coast | 6 |
AMTK
| Amtrak | 1 |
ANR
| Angelina and Neches River Railroad | 1 |
ATSF
| Atchison Topeka & Santa Fe | 8 |
ATW
| Atlantic and Western | 4 |
BCOL
| Canadian National Railways | 4 |
BKTY
| Union Pacific Railroad Company | 1 |
BN
| Burlington Northern | 5 |
BNSF
| BNSF Railway | 4 |
CFWR
| Caney Fork and Western Railroad | 1 |
CIRR
| Chattahoochee Industrial Railroad | 3 |
CMHX
| CarMath Incorporated | 2 |
CN
| Canadian National Railways | 6 |
CNA
| Canadian National Railways | 4 |
CNIS
| Canadian National Railways | 3 |
CNW
| Chicago & Northwestern | 2 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 6 |
FBOX
| TTX Company | 16 |
FLOX
| CIT Group/Capital Finance, Inc | 1 |
GTW
| Grand Trunk Western | 3 |
HS
| H and S Railroad Company | 1 |
IBT
| International Bridge and Terminal Company | 1 |
KCS
| Kansas City Southern | 20 |
LRS
| Laurinburg and Southern | 1 |
LW
| Louisville and Wadley Railway Company | 1 |
MP
| Missouri Pacific | 5 |
MRL
| Montana Rail Link | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NRLX
| CIT Group/Capital Finance, Inc | 2 |
NS
| Norfolk Southern | 6 |
PDRR
| Pee Dee River RR | 1 |
RBOX
| Railbox Company | 7 |
RPMX
| RPMG INC | 1 |
SBD
| Seaboard System | 1 |
SCL
| Seaboard Coast Line | 7 |
SGLR
| Seminole Gulf | 1 |
SIRX
| Southern Illinois Railcar Company | 3 |
SOU
| Southern | 15 |
SP
| Southern Pacific | 4 |
TASD
| Terminal Alabama State Docks | 1 |
TBOX
| TTX Company | 17 |
TFM
| Kansas City Southern De Mexico | 3 |
TR
| Tomahawk Railway L.P. | 1 |
UP
| Union Pacific Railroad Company | 1 |
WC
| Wisconsin Central | 2 |
WCCL
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 1 |