[HEAVY] Reinbraun, the Oversized Railway

The Rheinbraun is a private railway on closed link, used to move coal between opencast mine to some power station around, the location is on Germany, south west of Köln. The particularity is the single cab is wider than the rest of the train. If the train has to be reversed, the loco stays at the new rear end. The driver sits in one of the side gondolas, the seat is more or less facing sidewards, with the back at the outside, so he can steer the train in both directions. Which side he chooses in backward