What does this traffic sign combination indicate?

This traffic sign is a warning sign indicating a rail crossing ahead. According to German traffic rules, it alerts drivers that they are approaching a level crossing where a railway line intersects with the road.

At such crossings, drivers must be especially cautious, look out for approaching trains, and be prepared to stop if necessary. This sign does not indicate an underpass or a nearby train station, but specifically warns of a place where the road and railway track cross at the same level.

Always remember to reduce speed and observe any additional signals or barriers at a rail crossing for safety.