What does this road sign indicate?

The road sign you see is a "no entry" sign, meaning that vehicles are not allowed to enter a particular road or area designated by the sign. This restriction is important for maintaining traffic flow and ensuring safety in areas where entry could be hazardous, typically in one-way streets or zones restricted to pedestrians or specific vehicles.

In Germany, this sign is strictly enforced, and drivers must adhere to it to avoid fines and potential accidents. Understanding such signs is essential for safe driving and compliance with traffic regulations.