The vehicle’s braking distance is the distance covered by the vehicle:

1. From the moment of identifying the risk until the vehicle starts to brake.
2. From the moment the driver identifies the risk ahead until the vehicle makes a complete stop.
3. From the moment the driver identifies the risk ahead until he starts stepping on the brake pedal.
4. Correct answer: From the moment the driver steps on the brake pedal until the vehicle comes to a complete stop.

WhyBraking distance runs from the moment you press the brake until the vehicle stops completely. It grows with speed.