If my train crosses a border, will I need to show my passport to the conductor?
If you’re traveling between countries participating in the Schengen Agreement, you will not need to show your passport at the border crossings. If you are traveling between countries not part of the Schengen Agreement, you will have to show your passport at border crossings. Please note that not all countries of the EU participate in the Schengen Agreement (e.g. Great Britain, Ireland). On the other side, there are countries which are not part of the EU but which participate in the Schengen Agreement (e.g. Switzerland, Norway).
Will the conductor take my passport?
Conductors will not take your passport during day trips.
With overnight trips you’ll generally provide the train attendant with your reservation voucher, rail pass or train ticket, and passport as you board. That way, they can take care of everything with conductors and customs officials so you can sleep uninterrupted through the night.