Are you allowed at this intersection to make a U-turn from the traffic lane you are in?

Horizontal marking P-8b in the form of a left turn arrow is visible on the far left lane of the roadway. According to § 87 para. 2 of the Regulation on road signs and signals, such marking also permits a U-turn, provided it is not prohibited by sign B-23 or directional signal S-3. In the situation presented, no such prohibitions exist, so the U-turn is permitted.