Who has priority here?

Your answer is correct. The red car has priority in this situation because of the following reasons under German traffic rules:

1. Priority road sign: The yellow diamond sign indicates that the road you are on is a priority road, meaning vehicles on this road have the right of way.

2. Traffic light is green for you, allowing you to proceed.

3. The person directing traffic indicates that you must let the red car go first. In Germany, the instructions of a traffic officer override traffic lights and signs.

Therefore, the red car has priority because it is on a priority road, the green light supports that, and the traffic officer’s signal confirms it. You must wait and let the red car pass before you proceed. This rule ensures smooth and safe traffic flow where priority roads and traffic controllers are involved.