AOK
| Arkansas-Oklahoma Railroad | 4 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CMHX
| CarMath Incorporated | 1 |
IBT
| International Bridge and Terminal Company | 2 |
KCS
| Kansas City Southern | 1 |
MP
| Missouri Pacific | 2 |
MWCX
| Midwest Railcar Corporation | 1 |
NS
| Norfolk Southern | 3 |
UP
| Union Pacific Railroad Company | 2 |