What does this traffic sign indicate?

The traffic sign you are looking at indicates that motor vehicles are prohibited. This means that cars and other motorized vehicles are not allowed to enter or travel in the area marked by this sign.

Such signs are essential for maintaining safety and ensuring that certain areas, such as pedestrian zones or specific traffic routes, are free from motor vehicle traffic. This helps protect pedestrians and facilitates smoother movement in crowded or sensitive areas.

In German traffic regulations, similar signs play a critical role in managing vehicle flow and enhancing public safety. It's important for drivers to recognize and adhere to these prohibitory signs to comply with traffic laws and ensure safety for all road users.