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A2Difficulty 3/5

In heavy rain, why should particular attention be paid to puddles or areas of standing water on the carriageway?

Correct answer

They may cause loss of grip and aquaplaning.

Because they can cause loss of grip and aquaplaning if the tyres cannot evacuate enough water. Risk depends on speed, water depth and tyre condition and pressure, among other factors. Reduce speed before reaching the water, keep an appropriate gap and avoid abrupt manoeuvres. This does not mean gradients are harmless: they also require caution, but the question focuses on standing water.

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  • They always increase tyre grip.

  • They guarantee a shorter braking distance than on a dry road.

  • They may cause loss of grip and aquaplaning.

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