AGR
| Alabama and Gulf Coast | 15 |
ALM
| Arkansas Louisiana and Mississippi Railr | 3 |
AN
| Apalachicola Northern | 4 |
AOK
| Arkansas-Oklahoma Railroad | 14 |
ASAB
| Bay Line Railroad LLC | 1 |
ATW
| Atlantic and Western | 10 |
BAEX
| Andersons | 1 |
BM
| Boston & Maine | 1 |
CIRR
| Chattahoochee Industrial Railroad | 5 |
CNW
| Chicago & Northwestern | 1 |
COER
| Crab Orchard & Egyptian | 1 |
CP
| Canadian Pacific Railway | 1 |
CSX
| CSX Railroad | 11 |
EEC
| East Erie Commercial Railroad | 39 |
FGLK
| Finger Lakes Railway | 15 |
FRR
| Falls Road Railroad Company Incorporated | 1 |
GMRC
| Green Mountain RR | 8 |
GTRA
| Golden Triangle Railroad | 1 |
HLMX
| Helm Financial Corporation | 1 |
HS
| H and S Railroad Company | 15 |
KCS
| Kansas City Southern | 30 |
KRR
| Kiamichi | 1 |
KYLE
| Kyle Railroad | 2 |
LBR
| Lowville and Beaver River Railroad Compa | 4 |
LRWN
| Little Rock & Western | 2 |
MEC
| Maine Central | 3 |
MRL
| Montana Rail Link | 1 |
MSDR
| Knoxville & Holston River Railroad | 3 |
NS
| Norfolk Southern | 4 |
PAL
| Paducah & Louisville | 1 |
PDRR
| Pee Dee River RR | 1 |
SIRX
| Southern Illinois Railcar Company | 6 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 3 |
SRN
| Sabine River & Northern | 4 |
WC
| Wisconsin Central | 4 |
YB
| Youngstown Belt Railroad Company | 10 |