What must you anticipate on the other side of this crest in the road?

Your answer is fully correct. When approaching the top of a crest in the road in Germany, you must anticipate several possible hazards because your view ahead is limited:

1. A vehicle may be stationary just beyond the crest, hidden from view until you reach the top.
2. There may be an oncoming vehicle on your side of the road, possibly crossing the center line, since drivers coming from the other side may not stay strictly in their lane.
3. There may be a slow-moving vehicle on your side of the road, which you cannot yet see but could suddenly appear right after the crest.

Due to limited visibility over the crest, German traffic rules require you to reduce speed and be especially vigilant, prepared to react safely to any of these situations. This cautious approach helps prevent collisions with vehicles that are hidden by the incline.