What does this traffic sign indicate?

This traffic sign indicates that motor vehicles carrying dangerous goods with mandatory markings are prohibited from entering or using the designated area.

In Germany, this regulation is enforced to ensure safety in areas where hazardous materials could pose risks to public safety, such as residential zones or near sensitive infrastructure. The sign specifically addresses the need for restrictions related to dangerous goods transport, promoting safety for both drivers and nearby residents.

It's crucial for drivers to be aware of such regulations to prevent accidents and ensure compliance with traffic laws.