What is the rule of thumb when calculating the braking distance for evasive braking on a dry, even and asphalted roadway?

The rule of thumb for calculating the braking distance during evasive braking on a dry, even, and asphalted road is: take the speed in km/h, divide it by 10, then multiply that number by itself (square it), and finally divide by 2. This formula estimates how far your vehicle will travel after you start braking until it comes to a complete stop, helping you understand safe stopping distances. It reflects that braking distance increases with the square of the speed, meaning if you double your speed, the braking distance roughly quadruples. This rule helps drivers anticipate how much space they need to stop safely in emergencies.