ABOX
| TTX Company | 3 |
AGR
| Alabama and Gulf Coast | 1 |
AMTK
| Amtrak | 2 |
AN
| Apalachicola Northern | 1 |
ASAB
| Bay Line Railroad LLC | 1 |
BFBX
| Bakery Feeds, Division of Griffin Indust | 1 |
CEFX
| CIT Group/Capital Finance, Inc | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CMHX
| CarMath Incorporated | 2 |
CNA
| Canadian National Railways | 4 |
CRLE
| Coe Rail Incorporated | 1 |
CSX
| CSX Railroad | 3 |
EEC
| East Erie Commercial Railroad | 1 |
FBOX
| TTX Company | 1 |
FSRR
| FerroSur | 2 |
FXE
| Ferromex | 7 |
GC
| Georgia Central | 1 |
GNRR
| Georgia Northeastern | 1 |
HS
| H and S Railroad Company | 2 |
IFRX
| Infinity Rail LLC | 1 |
KCS
| Kansas City Southern | 1 |
LRS
| Laurinburg and Southern | 2 |
LW
| Louisville and Wadley Railway Company | 3 |
MEC
| Maine Central | 1 |
NAR
| Northern Alberta Railways | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 1 |
NWR
| Nashville & Western Railroad Corp. | 1 |
PICK
| Pickens Railway | 3 |
RBOX
| Railbox Company | 2 |
SOU
| Southern | 5 |
TASD
| Terminal Alabama State Docks | 1 |
TR
| Tomahawk Railway L.P. | 1 |