If you double your speed on a highway, your braking distance increases by:

Doubling your speed significantly impacts your braking distance due to the physics of motion, specifically the concept of kinetic energy. The kinetic energy of a vehicle is proportional to the square of its speed. Therefore, when you double your speed, the kinetic energy increases by a factor of four.

This means that to bring a vehicle to a stop, not only do you need to overcome the vehicle's existing momentum, but the amount of distance needed to do so also increases. Thus, if you travel at twice the speed, the distance required to stop will be four times greater than at your original speed. This demonstrates the crucial relationship between speed and stopping distance that drivers must understand for safe driving.