text: Wrong turn restriction (expert level needed to solve it):
  the rules for this intersection are the following: cars coming from the Pilatusstrasse are not allowed to do a right turn and drive in front of the station/Bahnhofplatz (except busses of the public transport – they have their own lane in the Pilatusstrasse). Cars and other vehicles coming from the Zentralstrasse are allowed to do a right turn in to the Bahnhofplatz. On top, the intersection has some micropieces of street there ... as I said at the beginning: here it needs somebody with some experience to solve that.