AOK
| Arkansas-Oklahoma Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 2 |
DODX
| Department Of Defense | 9 |
FTTX
| TTX Company | 1 |
FURX
| First Union Rail | 1 |
HS
| H and S Railroad Company | 1 |
HTTX
| TTX Company | 4 |
ITTX
| TTX Company | 6 |
KRL
| Kasgro Rail Lines | 10 |
MP
| Missouri Pacific | 3 |
PPU
| Tazewell & Peoria Railroad | 1 |
PTTX
| TTX Company | 2 |
QTTX
| TTX Company | 3 |
RAIX
| Union Carbide Corporation | 2 |
RCLX
| Macquarie Rail Inc | 3 |
RTTX
| TTX Company | 4 |
SPMW
| Southern Pacific Maintenance of Way | 4 |
TTDX
| TTX Company - DOD Service Flats | 2 |
TTEX
| TTX Company - Articulated Flat Cars (TOFC/COFC) | 2 |
TTHX
| TTX Company - Flat Cars | 3 |
TTMX
| TTX Company | 1 |
TZPR
| Tazewell & Peoria Railroad | 1 |
UP
| Union Pacific Railroad Company | 3 |
UPCX
| Clean Harbors Environmental Sciences, Inc. | 2 |