What do these traffic signs indicate?

This traffic sign combination means "No entry 100 meters ahead." The red circle with a white horizontal bar is the universal German "No entry" sign, indicating that vehicles are prohibited from entering a certain road or area.

The small rectangular white sign below it, with "100 m" written on it, provides a distance indication. It tells drivers that the no entry restriction does not start immediately but will come into effect 100 meters further ahead.

Understanding this helps you plan your driving accordingly: you still have 100 meters before the restriction begins, but after that, you must not enter the road or path indicated. It warns you in advance so you can safely change lanes or choose a different route. This combination ensures clear communication of restrictions that start after a short distance rather than immediately at the sign.