Every time I pass an AI controlled train pulled by a DB BR155, the center headlight on the REAR cab is always switched on. Is this normal or is it a bug? It is only the center headlight on the rear cab, the other head and tail lights are switched off. I read that German locomotives must have the center headlight on both cabs switched on when yard shunting, but is it normal when the loco is actually pulling a train? It happens on the Bremen-Oldenburg route when the AI uses the PRESS BR155. Can't say if other routes are affected by this.
I would say it's a bug. Shunting is different, as the train is constantly going back and forth. Pulling a train, however, means they only go in one direction usually. I would imagine the red light is on the rear of the train it is pulling.