I love being a passenger and I give up control of the train. Is there an option anywhere to give up control or do you have to wait ages for the game to ask you?
I think the only way to do this would be to start the game in Free Roam mode (for around a time when a train is supposed to arrive) and then board it as a passenger. I haven't found a way to manually give up control over than waiting for the game to ask.