What is the right course of action?

In this scenario, the correct actions are to give way to the cyclist, give way to the bus, and stop at the stop line.

According to German traffic regulations, when you encounter a stop sign, you must come to a complete stop at the stop line before proceeding. Additionally, you must yield to cyclists and public transport buses, which often have the right of way in such situations.

By giving way to the cyclist, you ensure their safety, while yielding to the bus is crucial as it may be picking up or dropping off passengers. Stopping at the stop line allows for proper visibility and ensures compliance with traffic rules before making any further maneuvers. Each of these actions contributes to safe and responsible driving in accordance with German traffic laws.