CSX
| CSX Railroad | 2 |
CWM
| CWM | 1 |
CWR
| CWR Incorporated | 1 |
DODX
| Department Of Defense | 1 |
FEC
| Florida East Coast | 1 |
ITTX
| TTX Company | 1 |
JTTX
| TTX Company | 1 |
KRL
| Kasgro Rail Lines | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 1 |
MTTX
| TTX Company | 5 |
NS
| Norfolk Southern | 1 |
PTTX
| TTX Company | 4 |
RTTX
| TTX Company | 1 |
SBD
| Seaboard System | 1 |
SOU
| Southern | 2 |
TZPR
| Tazewell & Peoria Railroad | 1 |
VTTX
| TTX Company | 1 |