AGR
| Alabama and Gulf Coast | 78 |
ALM
| Arkansas Louisiana and Mississippi Railr | 7 |
ATW
| Atlantic and Western | 4 |
BAYL
| Bay Line, LLC | 16 |
BKTY
| Union Pacific Railroad Company | 367 |
BM
| Boston & Maine | 3 |
CAIX
| CAI Rail Inc. | 1 |
CFWR
| Caney Fork and Western Railroad | 6 |
CIRR
| Chattahoochee Industrial Railroad | 5 |
CNW
| Chicago & Northwestern | 6 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 18 |
CSX
| CSX Railroad | 30 |
EEC
| East Erie Commercial Railroad | 15 |
FCRD
| First Coast Railway | 2 |
FGLK
| Finger Lakes Railway | 3 |
GMRC
| Green Mountain RR | 9 |
GNRR
| Georgia Northeastern | 1 |
GTRA
| Golden Triangle Railroad | 9 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 26 |
KCS
| Kansas City Southern | 19 |
LBR
| Lowville and Beaver River Railroad Compa | 2 |
LRS
| Laurinburg and Southern | 55 |
MEC
| Maine Central | 44 |
MMA
| Montreal, Maine & Atlantic | 1 |
MP
| Missouri Pacific | 1 |
MRL
| Montana Rail Link | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 4 |
NOKL
| Northwestern Oklahoma | 1 |
NWR
| Nashville & Western Railroad Corp. | 2 |
PAL
| Paducah & Louisville | 1 |
SMW
| St Marys Railway West LLC | 11 |
SNC
| Saratoga & North Creek Railway | 2 |
SOU
| Southern | 6 |
SRN
| Sabine River & Northern | 20 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 26 |