What do you do upon seeing this traffic sign?

This traffic sign is the "Yield" sign (Give Way). According to German traffic rules, when you see this sign, you must slow down and be prepared to stop if necessary. You must give the right of way to all traffic crossing your path, including vehicles and pedestrians. Approaching at a moderate speed ready to brake is essential. Also, you must allow any cross-wise moving traffic the right of way.

The rule that if you are turning right you do not have to wait is incorrect because yielding applies to all directions until the way is clear. So, even if turning right, you must yield to other vehicles or pedestrians with right of way.

By following these rules, you ensure safety and clarity at intersections with yield signs.