What is the right course of action?

In this scenario, you need to prioritize who has the right of way. According to German traffic rules, when you encounter a junction with a yield sign (as indicated in the image), you must allow vehicles with priority to pass first.

The correct actions in this situation would include allowing the motorcycle to pass through, as well as taking priority over the bus that is approaching from the left. In German traffic law, vehicles on main roads have priority over those on side roads, meaning you must yield to the bus if it is on a primary road while you are on a side street.

By allowing the motorcycle to pass and taking priority over the bus, you ensure the flow of traffic is maintained safely and according to regulations. This combination is crucial for preventing potential accidents and for adhering to the set traffic rules.