AGR
| Alabama and Gulf Coast | 86 |
ALM
| Arkansas Louisiana and Mississippi Railr | 6 |
AN
| Apalachicola Northern | 1 |
AOK
| Arkansas-Oklahoma Railroad | 3 |
ATW
| Atlantic and Western | 9 |
BAEX
| Andersons | 1 |
BAYL
| Bay Line, LLC | 1 |
BKTY
| Union Pacific Railroad Company | 206 |
BM
| Boston & Maine | 2 |
CFWR
| Caney Fork and Western Railroad | 1 |
CIRR
| Chattahoochee Industrial Railroad | 30 |
CNW
| Chicago & Northwestern | 4 |
COER
| Crab Orchard & Egyptian | 6 |
CP
| Canadian Pacific Railway | 8 |
CSX
| CSX Railroad | 89 |
DMM
| Dansville and Mount Morris Railroad Comp | 1 |
EEC
| East Erie Commercial Railroad | 185 |
ELS
| Escanaba and Lake Superior Railroad Comp | 1 |
FCRD
| First Coast Railway | 6 |
FGLK
| Finger Lakes Railway | 3 |
GMRC
| Green Mountain RR | 37 |
GTRA
| Golden Triangle Railroad | 12 |
HLMX
| Helm Financial Corporation | 2 |
HS
| H and S Railroad Company | 49 |
KCS
| Kansas City Southern | 21 |
KRR
| Kiamichi | 1 |
LBR
| Lowville and Beaver River Railroad Compa | 2 |
LRS
| Laurinburg and Southern | 13 |
MB
| Meridian & Bigbee | 5 |
MEC
| Maine Central | 12 |
MP
| Missouri Pacific | 1 |
MSDR
| Knoxville & Holston River Railroad | 4 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 4 |
NOKL
| Northwestern Oklahoma | 6 |
NS
| Norfolk Southern | 24 |
PAL
| Paducah & Louisville | 3 |
PDRR
| Pee Dee River RR | 3 |
PPU
| Tazewell & Peoria Railroad | 1 |
SGLR
| Seminole Gulf | 3 |
SIRX
| Southern Illinois Railcar Company | 10 |
SMW
| St Marys Railway West LLC | 13 |
SNC
| Saratoga & North Creek Railway | 17 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 1 |
SRN
| Sabine River & Northern | 6 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
WC
| Wisconsin Central | 2 |
WRWK
| Providence & Worchester Railroad | 39 |