What is allowed at this traffic sign?

The sign depicted is a "No Parking" sign. This means that vehicles are not allowed to park in the area where the sign is displayed. According to German traffic regulations, parking is strictly prohibited to ensure traffic flow and safety.

It's important to note that stopping for brief moments for loading or unloading, or to let passengers in or out, may still be allowed depending on additional signs or rules posted in the area. However, any extended parking is not permitted under this sign. Always be attentive to any supplementary traffic signs that might provide more specific regulations in the area.