You are travelling at 100 km/h and have a reaction time of 1 second. What is the reaction distance according to the rule of thumb?

The reaction distance is the distance your vehicle travels from the moment you recognize a hazard until you start to brake. According to the German rule of thumb, the reaction distance can be calculated by multiplying your speed (in km/h) by your reaction time (in seconds) and then dividing by 3.6 to convert km/h to m/s. However, a simple approximation is to multiply your speed by 3 for a 1-second reaction time, resulting in 30 meters at 100 km/h. This means if your reaction time is 1 second, at 100 km/h you will travel about 30 meters before you begin braking. Understanding this helps with safe driving distances and stopping in time for hazards.