| 100% | LOCOS | 5 | Train pullers, for short |
| 67% | STA | 3 | Train terminal, for short |
| 67% | STA | 3 | Train stop, for short |
| 67% | STN | 3 | Train depot, for short |
| 67% | STN | 3 | Train stopover, for short |
| 67% | STN | 3 | Train stop, for short |
| 67% | TECHS | 5 | Training sites, for short |
| 64% | ELS | 3 | Overhead trains, for short |
| 64% | ELS | 3 | Urban trains, for short |
| 64% | ELS | 3 | Chicago trains, for short |
| 64% | ABCS | 4 | Basic training, for short |
| 61% | HIIT | 4 | Short name for high-intensity interval training |
| 61% | XXXXXXXXX | 9 | Short training sessions for athletes |
| 58% | CPR | 3 | Red Cross training, for short |
| 58% | MTA | 3 | Overseer of trains, for short |
| 58% | CPR | 3 | Nurse's training, for short |
| 58% | ELS | 3 | Windy City trains, for short |
| 58% | ELS | 3 | Overhead Chicago trains, for short |
| 58% | DEFIB | 5 | CPR training apparatus, for short |
| 57% | CTA | 3 | 'L' train overseer, for short |
| 57% | STN | 3 | Train stopping point, for short |
| 57% | STN | 3 | Train's stopover, for short |
| 57% | ETD | 3 | Train ticket info, for short |
| 57% | ROTC | 4 | Military training org., for short |
| 55% | STN | 3 | Where a train stops, for short |
| 53% | MTA | 3 | Train and bus overseer, for short |
| 53% | LIRR | 4 | Train to the Hamptons, for short |
| 53% | STA | 3 | Train traveler's stop, for short |
| 53% | PAREN | 5 | ), for short |
| 53% | USD | 3 | $, for short |