What effect does vehicle speed have on driver reaction time?

Explanation

Correct answer: The higher the speed, the less time to react.

Answer C is correct. The higher the speed, the less time the driver has to react in a hazardous situation. At a higher speed the vehicle covers more ground every second, which shortens the time available to decide and to carry out an avoiding manoeuvre. This is one of the main reasons for matching speed to road conditions.