What is correct in this situation?

In this situation, the correct understanding would involve recognizing that the motorbike has the right of way. According to German traffic rules, when approaching a junction, vehicles already on the road have priority unless signs indicate otherwise.

Your response highlighted that the motorbike would have to wait and that you needed to signal a left turn, which are incorrect in this context. The motorbike does not need to wait; it has the right of way, and you must yield. Additionally, signaling a left turn is unnecessary unless you are actually turning.

Understanding the right of way is crucial for safe driving and ensuring that all road users are aware of their responsibilities. Always yield to vehicles that have the right of way to avoid accidents.