Subcategories:
You can see the full category hierarchy on the Category Map.
| 
 | 
 | 
| 1 beginning with A | AMTRAK | 
| 1 beginning with B | BALFOUR BEATTY RAIL LIMITED | 
| 1 beginning with C | CAMELBACK | 
| 1 beginning with D | DEADMAN'S BUTTON | 
| 1 beginning with E | ERIE | 
| 1 beginning with F | FAST TRACK | 
| 1 beginning with G | GRADE | 
| 1 beginning with H | HOT BOX | 
| 1 beginning with I | ILLINOIS CENTRAL | 
| 1 beginning with J | JUNCTION | 
| 1 beginning with K | KETTLE | 
| 1 beginning with L | LUAS | 
| 1 beginning with N | NARROW GAUGE | 
| 1 beginning with O | ON THE LAW | 
| 1 beginning with Q | QUICK-ACTING BRAKE | 
| 2 beginning with R | RABHADH RAILROAD | 
| 2 beginning with S | SAND DRAG STEAM | 
| 3 beginning with T | TRAIN SERVICE TRAIN (2) TRAIN | 
| 2 beginning with U | UDE UNPUNCTUAL TRAIN SERVICES | 
| 2 beginning with W | WAGON WAITING ROOM | 
| 26 apronyms in total | |