Adult:

over child age limit

Senior:

60 +

Youth:

under 27 on the first day of travel

Child:

4 - 11 on the first day of travel: half adult fare; 3 and under travel for free
4 - 12 (special for Poland Pass)
4 - 15 (special for Norway Pass)
5 - 15 (special for BritRail products, Ireland Pass)
6 - 11 (special for Austrian Railpass, German Railpass)
6 - 12 (special for Prague Excursion Pass)
6 - 14 (special for Hungary Pass)
6 - 15 (special for Swiss travel System, Slovakia Pass)
6 - 16 (special for Finland Pass)