ACWR
| Aberdeen, Carolina & Western |
|
4
|
0
| ACWR |
AM
| Arkansas & Missouri |
|
1
|
0
| AM |
AOK
| Arkansas-Oklahoma Railroad |
|
5
|
0
| AOK |
APA
| Apache Railway Company |
|
6
|
0
| APA |
AR
| Aberdeen and Rockfish |
|
1
|
0
| AR |
ARZC
| Arizona and California Railroad |
|
1
|
0
| ARZC |
AZER
| Arizona Eastern Railway Company |
|
3
|
0
| AZER |
BAYL
| Bay Line, LLC |
|
2
|
0
| BAYL |
CAGY
| Columbus & Greenville Railway |
|
1
|
0
| CAGY |
CFNR
| California Northern |
|
3
|
0
| CFNR |
CIC
| Cedar Rapids & Iowa City |
|
1
|
0
| CIC |
CM
| Central Montana Rail Incorporated |
|
1
|
0
| CM |
CORP
| Central Oregon & Pacific |
|
2
|
0
| CORP |
CSP
| Camas Prairie RailNet Incorporated |
|
2
|
0
| CSP |
CW
| Colorado and Wyoming |
|
4
|
0
| CW |
FMRC
| FarmRail |
|
1
|
0
| FMRC |
FWWR
| Fort Worth and Western |
|
3
|
0
| FWWR |
GFRR
| Georgia and Florida Railnet |
|
4
|
0
| GFRR |
GSWR
| Georgia Southwestern |
|
1
|
0
| GSWR |
HOG
| Heart of Georgia |
|
4
|
0
| HOG |
IATR
| Iowa Traction Railroad Company |
|
1
|
0
| IATR |
ILW
| Illinois Western Railroad |
|
1
|
0
| ILW |
IORY
| Indiana & Ohio |
|
3
|
0
| IORY |
ISRR
| Indiana Southern |
|
1
|
0
| ISRR |
KBSR
| Kankakee Beaverville and Southern Railroad Company |
|
3
|
0
| KBSR |
KRR
| Kiamichi |
|
2
|
0
| KRR |
LIRC
| Louisville & Indiana |
|
1
|
0
| LIRC |
LNW
| Louisiana & Northwestern |
|
2
|
0
| LNW |
MIDH
| Middletown and Hummelstown RR Company |
|
1
|
0
| MIDH |
MNA
| Missouri and Northern Arkansas |
|
8
|
0
| MNA |
OHCR
| Ohio Central |
|
1
|
0
| OHCR |
RJCC
| R.J. Corman Railroad/Kentucky Lines |
|
1
|
0
| RJCC |
RJCP
| R.J. Corman Railroad Company/ Pennsylvan |
|
1
|
0
| RJCP |
RLK
| RailAmerica Ottawa Valley Railway |
|
1
|
0
| RLK |
RRC
| Respondek Railroad Corporation |
|
2
|
0
| RRC |
RRRR
| Rock and Rail Incorporated |
|
11
|
0
| RRRR |
SERA
| Sierra Northern Railway |
|
3
|
0
| SERA |
SKOL
| South Kansas and Oklahoma |
|
1
|
0
| SKOL |
SLRG
| San Luis and Rio Grande Railroad |
|
4
|
0
| SLRG |
SLRS
| SMS Rail Service Incorporated |
|
4
|
0
| SLRS |
SMNR
| Southern Manitoba Railway Incorporated |
|
1
|
0
| SMNR |
SRC
| Strasburg Railroad |
|
2
|
0
| SRC |
SW
| Southwestern Railroad Company |
|
12
|
0
| SW |
TSU
| Tulsa-Sapulpa Union Railway |
|
1
|
0
| TSU |
TXOR
| Texas and Oklahoma Railroad Company |
|
2
|
0
| TXOR |
UCRY
| Utah Central |
|
1
|
0
| UCRY |
WPRR
| Willamette and Pacific |
|
1
|
0
| WPRR |
WRIX
| Western Rail Inc |
|
2
|
0
| WRIX |