You are driving at 100 km/h on a road not inside a built-up area. In front of you a truck is travelling at 70 km/h. What is the minimum distance you must be from a crest in the road when commencing an overtaking manoeuvre?

You answered correctly. When overtaking outside built-up areas and approaching a crest (a hill where you cannot see oncoming traffic), German traffic rules require a particularly large safety distance to avoid dangerous situations. The minimum safe distance in this case is 800 meters from the crest before starting an overtaking maneuver. This large distance ensures you have enough time and space to safely complete the overtaking, even if oncoming vehicles are not visible due to the road’s elevation. This rule exists because visibility is very limited at crests, so the higher safety margin greatly reduces the risk of head-on collisions during overtaking. Always remember: the better your visibility, the safer your overtaking decision.