I have noticed that since the last update which gave us Barndon's signal updates, the game logic that is supposed to tell the cars whether to open the traps or not is not always working and there is no rime or reason as to it. At some stations, one of 2 cars will have the traps shut and at others, all cars will have the traps closed. No blame pointing to Bandon on this, he only worked with the signals.
I am pretty sure it has been always the case on the route. The platform height detection never really worked as it should.