You are driving in a combination vehicle outside of a built-up area on a road with only one lane in each direction. What distance must you usually maintain to the vehicle ahead?

You answered correctly. When driving a combination vehicle outside built-up areas on roads with only one lane in each direction, you must leave enough distance to the vehicle in front so that an overtaking vehicle can safely move back into the lane between you and the vehicle ahead. This rule helps prevent dangerous situations during overtaking and ensures smooth traffic flow. The distance does not have to allow space for two vehicles to merge, nor is there a fixed maximum like 10 meters—the focus is always on the safety of overtaking traffic. Knowing this helps you maintain safer distances in similar situations.