What is the right course of action?

In the scenario depicted, you are faced with a situation involving a cyclist and another vehicle, the blue car. According to German traffic regulations, the correct actions in such a situation depend on the right of way.

You must yield to the cyclist if they are in a position where they are turning or moving straight ahead in front of you. At the same time, if the blue car is approaching from the right side, you also need to allow it to pass through, as vehicles coming from the right typically have the right of way unless specified otherwise by traffic signage.

Thus, both allowing the cyclist to turn and permitting the blue car to pass through are necessary actions to ensure safety and compliance with traffic rules. By doing so, you prevent potential accidents and adhere to the principle of yielding to right-side traffic and vulnerable road users like cyclists.