BTFX
| BROWNER TURNOUT COMPANY | 4 |
BTTX
| TTX Company - Autoracks | 1 |
FTTX
| TTX Company | 2 |
ITTX
| TTX Company | 23 |
JTTX
| TTX Company | 2 |
KCS
| Kansas City Southern | 5 |
MP
| Missouri Pacific | 1 |
PEYX
| Transportation Technology Services Inc | 18 |
QUAX
| Redstreak, LLC | 1 |
TOEX
| TOEX | 9 |
TPDX
| TPDX | 3 |