Who must signal a change of direction here?

In this situation, both the motorcycle and you, as the driver of the car, are required to signal your intentions when changing direction. According to German traffic rules, signaling before a turn is essential for safety. It informs other road users of your actions, helping prevent accidents.

The motorcycle must signal, as it is making a maneuver on the road. Additionally, as the car driver, you should also signal to communicate your intended direction to the vehicles around you. Not signaling can lead to confusion and increase the risk of collisions. Hence, both parties must signal to ensure clarity and safety in traffic.