What does this traffic sign combination indicate?

The traffic sign shown indicates a warning for an upcoming rail crossing. This sign alerts drivers that they may be approaching a location where a train tracks intersect with the road. It's important to reduce speed and be prepared to stop, as there may be trains passing.

In a rail crossing scenario, it is crucial to be aware of not only the presence of the tracks but also the potential for sudden train arrivals. Familiarizing oneself with this sign and following the necessary precautions outlined by German traffic laws ensures greater safety for all road users.