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What effect does a wet road surface have on a vehicle’s braking ability?

  1. A.It reduces the braking distance of that required on a dry surface.
  2. B.It makes no difference to the required braking distance.
  3. C.Modern tyres provide grip on a wet road as effectively as on a dry road.
  4. D.Generally, it doubles the braking distance of that required on a dry surface.
Show answer & explanation

Correct answer: D. Generally, it doubles the braking distance of that required on a dry surface.

When it is wet, your tyres do not grip the road surface as well as when it is dry and your stopping distance is increased. For these reasons you should slow down during or after rain and keep a greater distance from the vehicle in front.

This is an official-style question from the Safe and Responsible Driving topic of the Ireland driver theory test (Cat. B). Practise all 807 questions free on iTest.ie — with timed mock exams, automatic mistake tracking and progress sync across devices.

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