Question 4181
What is the name of the distance a vehicle travels from the moment the driver perceives a stimulus until they respond to it?
- Stopping distance.
- Reaction distance.
- Braking distance.
Show answer and explanation
Correct answer: Reaction distance.
The meters the vehicle travels from when you notice a hazard until you respond to it, for example by pressing the brake, make up the reaction distance. Braking distance starts when you begin braking and ends when you stop, and stopping distance is the sum of the two. In the image, the driver of the blue passenger car travels the reaction distance from when they see the pedestrian in the crosswalk until they press the brake.