AGR
| Alabama and Gulf Coast | 52 |
ALM
| Arkansas Louisiana and Mississippi Railr | 6 |
ATW
| Atlantic and Western | 3 |
BAYL
| Bay Line, LLC | 12 |
BKTY
| Union Pacific Railroad Company | 307 |
BM
| Boston & Maine | 3 |
CAIX
| CAI Rail Inc. | 1 |
CFWR
| Caney Fork and Western Railroad | 6 |
CIRR
| Chattahoochee Industrial Railroad | 5 |
CLSX
| Cargill Incorporated Salt Division | 2 |
CNW
| Chicago & Northwestern | 4 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 14 |
CSX
| CSX Railroad | 26 |
EEC
| East Erie Commercial Railroad | 13 |
FCRD
| First Coast Railway | 2 |
FGLK
| Finger Lakes Railway | 3 |
GMRC
| Green Mountain RR | 7 |
GNRR
| Georgia Northeastern | 1 |
GTRA
| Golden Triangle Railroad | 4 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 22 |
KCS
| Kansas City Southern | 18 |
LBR
| Lowville and Beaver River Railroad Compa | 2 |
LRS
| Laurinburg and Southern | 54 |
MEC
| Maine Central | 33 |
MMA
| Montreal, Maine & Atlantic | 1 |
MP
| Missouri Pacific | 1 |
MRL
| Montana Rail Link | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 3 |
NOKL
| Northwestern Oklahoma | 1 |
PAL
| Paducah & Louisville | 1 |
SMW
| St Marys Railway West LLC | 10 |
SNC
| Saratoga & North Creek Railway | 2 |
SOU
| Southern | 6 |
SRN
| Sabine River & Northern | 20 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 22 |