What does the distance to be maintained from the vehicle ahead depend on?

In German traffic rules, the distance you must keep from the vehicle ahead depends on several factors to ensure safety. First, visibility conditions affect how well you can see the road and the traffic ahead; poor visibility, like fog or rain, requires a longer distance. Second, speed is crucial because the faster you go, the more distance you need to stop safely if the vehicle in front brakes suddenly. Lastly, the state of the road surface matters since wet, icy, or slippery roads increase braking distances, so you must leave more space. By considering all three—visibility, speed, and road condition—you can maintain a safe following distance to prevent collisions.