Calculate approximately the braking distance of a car from a certain speed. You can base different parameters on this.
Once different substrates that affect the braking distance. Of course, in the calculation these are only used approximately (idealized).
On a dry road we expect a normal road surface with average tires. In the event of a hazard, a double deceleration is assumed to be normal. In the case of wet, a normally grippy, clean road without aquaplaning should be assumed. In the case of black ice, you basically have to distinguish between wet black ice (worst friction value), normal and dry (best friction value for black ice) - we start from the calculation of normal ice.
On the other hand, you can specify whether a delay time is to be observed before the start of braking. This includes the response time that a typical car driver spends eliciting an event, the time it takes for the brake pedal to actually kick, and the time it takes for the brakes to respond to the actual physical braking effect. Simplified, the path is also taken as the path of reaction during this delay. Statistically, you are here with 1 second, which is in our formula so influential.
The rule of thumb for the braking distance without delay time, as it is stated in the driving school is, by the way, as follows:
Speed (km / h) squared / 100 = braking distance (m)
Note that the values obtained are of course not binding, but based on the "rule of thumb" prescribed by law. The app is therefore quite suitable for learning for the driver's license.
