A driver's typical thinking distance is 12 metres. What is the typical overall stopping distance at that speed?

Answer and explanation

Correct answer: B. 36 metres

  1. Step 1: Thinking distance of 12 m matches 40 mph in the Highway Code table. Step 2. At 40 mph the braking distance is 24 m, so the overall distance is 12 + 24 = 36 m. Answer: 36 metres. Why not the others: 24 m is only the braking distance, 48 m is double the thinking distance, and 53 m belongs to 50 mph.

Practise more Safety Margins: Calculations.

Free questions with an explanation for every one, and full timed Driving Theory Test (Car) - Great Britain mock tests.