What is the right course of action?

In this scenario, the correct course of action involves yielding to the blue car and the motorcycle. According to German traffic regulations, when you encounter situations where vehicles are turning or merging, you must assess right of way.

The key points here are:

1. **Yielding to Turning Vehicles**: The blue car appears to be turning at the intersection. In such cases, you are generally required to allow the vehicle that is already in the intersection or about to turn the right of way.

2. **Motorcycle Consideration**: If the motorcycle is turning as well, it should also be given priority, especially if it is already in motion in the intersection area before you initiate your turn.

By acknowledging both the blue car and the motorcycle, you ensure compliance with traffic laws regarding right-of-way, thereby promoting safety and preventing potential accidents.