retourkaartje
A retourkaartje is a return ticket used for public transport that allows a round trip between two places. The ticket covers travel from the origin to the destination and back to the origin, typically within a specified period and according to the rules of the transport operator. In Dutch-speaking contexts, it is commonly contrasted with a one-way ticket (enkele reis) and is often cheaper than purchasing two single journeys.
Forms and variants differ by operator and country. A retourkaartje can be issued as a physical card,
Usage and validity are defined by the issuing operator. The holder typically selects the origin and destination
In practice, retourkaartjes are widely used for rail, bus, tram, and ferry services in many parts of