| Abbreviation | Designation | |
|---|---|---|
| RP | Reservierungspflicht (German) compulsory reservation / mandatory reservation | |
| RP | Rail Polska (Polish) | railway company |
| DE-RP | Rheinland-Pfalz, Land Rheinland-Pfalz (German) Rhineland-Palatinate | country code |
| RP | RAILPLUS | rate for rail travel / ticket |