BBCX
| ABB Power Generation Incorporated | 2 |
BM
| Boston & Maine | 12 |
CP
| Canadian Pacific Railway | 3 |
DSRX
| Downeast Scenic | 2 |
DUPX
| Du Pont De Nemours and Company Incorporated | 1 |
GTR
| Great River Railroad; d/b/a Rosedale-Bolivar County Port Comm | 1 |
HOBO
| HOBO | 1 |
LRRE
| LRRE | 1 |
MAMX
| Mammoet USA, Inc | 1 |
MBA
| MBA | 7 |
MBTA
| Massachusetts Bay Transit Authority | 4 |
MCER
| Massachusetts Central Railroad | 1 |
MCVX
| Massuchusetts Call/Volunteer Firefighters Assoc. | 1 |
MEC
| Maine Central | 3 |
MMA
| Montreal, Maine & Atlantic | 1 |
NYCX
| New York Central Lines LLC | 3 |
PERX
| Perini Corporation | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
RUT
| Vermont Railway Incorporated | 2 |
TSHX
| Tshiuetin Rail Transportation, Inc. | 3 |
UP
| Union Pacific Railroad Company | 1 |
VTR
| Vermont Railway | 2 |