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

The stopping distance at a speed of 100 km/h is essential to understanding road safety and adhering to German traffic regulations. According to the rule of thumb, the stopping distance is calculated by considering both the reaction distance and the braking distance.

1. Reaction Distance: This is the distance covered during the driver's reaction time. At 100 km/h, which is approximately 27.78 m/s, if your reaction time is 1 second, the reaction distance is about 28 m.

2. Braking Distance: This is the distance needed to stop the vehicle once the brakes are applied. The braking distance can vary based on factors such as road conditions and vehicle type. For a typical vehicle under normal conditions at 100 km/h, the braking distance is roughly 102 m.

By adding both distances together:
- Reaction distance (about 28 m) + Braking distance (about 102 m) = Total stopping distance of around 130 m.

This understanding is crucial for safe driving and maintaining adequate distance from the vehicle ahead, as stipulated in German traffic laws. Knowing the stopping distance helps drivers make informed decisions and prevent accidents, ensuring safety on the road.