You are travelling at 100 km/h and brake normally. What is the braking distance according to the rule of thumb?

In German traffic rules, the braking distance at normal conditions can be estimated using a simple rule of thumb: the braking distance in meters is approximately equal to the speed in kilometers per hour. So, if you are traveling at 100 km/h, the braking distance is about 100 meters. This means once you start braking, your car will take roughly 100 meters to come to a complete stop under normal road and weather conditions. This rule helps drivers quickly estimate stopping distances for safety and reaction planning on the road.