After several hundred hours in the driving seat I thought I'd take a passenger ride on the slower (cant remember name off top of my head) train on SEHS. Well after enjoying cattle class for while I thought I'd walk up train and join the driver. WELLLLLL you can't. I was invisible walled into the one carriage. Bug or made like this?
That's odd, never happened to me, usually you are quite free to roam about in the train, the only thing you can't do is take control of it while it's moving at "high" speed (anything over 5 km/h) but you should be able to sit on the second man's seat