When driving outside of a built-up area, what minimum safety distance should you maintain between you and the vehicle ahead?

On roads outside of built-up areas in Germany, you must keep a safe following distance to the vehicle ahead. The minimum distance required is at least half of your current speed in meters. For example, if you are driving at 100 km/h, you should maintain at least 50 meters distance. This rule ensures you have enough time to react and stop safely in case the vehicle in front suddenly brakes. The other options, such as one third or one fifth of the speed, would not provide enough space for safe stopping, especially at higher speeds. Remembering the "half your speed in meters" rule will help you keep a safe distance.