| Abbreviation | Designation | |
|---|---|---|
| TP | Transportleitung Personennahverkehr (German) rail traffic control center | rail transport operations |
| 73 / GR | Ellás, Elliniki Dimokratia (Greek) Greece, Hellenic Republic | country code |
| 73 / RSI | Singen (Hohentwiel) (German) | station code |