The braking distance at 70mph is a huge 75m, which is about 9 London buses. SpeedMy prediction is that the more speed the car is travelling with, the longer the stopping distance will be after applying the brake.The velocity of the car is related to the kinetic energy of the car. How Speed Effects Braking Distance. A car's braking distance increases as the square of its speed (disregarding reaction time). Speeding includes travelling above the speed limit as well as driving too fast for the conditions, and these are major contributors to both the number and severity of crashes. Double your speed from 20 to 40 mph your braking distance … 2nd place in Wear resistance. How Speed Effects Stopping Distance and Impact. ‘This implies that the marginal effect of higher speed on braking distance is increased when the road is wetter (assuming the coefficient is positive).’ ‘The system recognises when the driver hits the brake pedal hard and fast, and automatically increases the speed of the hydraulic pressure build up to shorten the braking distance.’ Even though the speed increase is always a linear 20 km/h... the same 20 km/h more require more and more meters to annihilate in braking. 2nd place in Dry handling. An anti-lock braking system (ABS) is a safety anti-skid braking system used on aircraft and on land vehicles, such as cars, motorcycles, trucks, and buses. The higher the traction coefficient is, the shorter the braking distance will be [source: Jones & Childers]. This is why it is so important to double or triple your following distance in non-ideal conditions. In the C1 Case, with v1 being the original speed, v2 the target speed, v2