@romagi1 I haven't placed my cars on the train tracks - just stuck them in an empty Sunset Valley to work on - and the bike racks were preventing my visiting sim from entering any door (on the British Pullman and Royal Scotsman). I just turned around the bike rack at each entry that had its access toward the middle of the doorway and then everything was fine. I didn't have any objects inside that were impeded by them before you turned them, except a sink in a now-abandoned WIP where I couldn't find another spot other than the corner by the door. Placing a "false wall" (also known as a recolored piece of castle wall) and moving the sink forward took care of that. All of which makes me think it just depends on how far back is the point where the sim interacts with the object, since all-in-ones work and things other than the sink I've tried all work. Can't offer anything about whether the train tracks are causing an additional problem.
Agreeing that it makes sense for us to just turn them to work with our particular situation.