i found a repeatable way to end up out of bounds in Kassel Wuzburg. I know that's not how you spell it. On the northernmost end of the route, if you board the ICE1 at 6:40 am, and let it take you out of bounds, the game will give the normal end of representation message, and then the pause screen. However, instead of what I thought was only two options, being Restart, and Quit, there's also a return to free roam option. clicking that, and you are back in the same train you were in before, and eventually the train will go through the portal, spawning out of the game, leaving you out of bounds and free to explore the out of bounds area, until you fall through the world that is. I personally found this rather entertaining seeing the out of bounds areas the developers were never meant for us to see, but I also am pretty sure this wasn't intentional. I haven't seen this happen since the Amtrak Route NEC New york from TSW2020, and in that route, i never encountered any out of bounds walls. just constant roaming until i got bored. Just wanted to bring to your attention that this is a thing, and maybe not something you intended on being a thing. I have no idea how this worked in the other portal areas, or on the other two routes. Haven't tested spirit of steam, but i'm pretty sure that route isn't affected.