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Difficulty: MediumWet Weather and Aquaplaning

You are driving along a bypass in wet conditions when a layer of water builds up between your tyres and the road surface, causing the vehicle to aquaplane. Which action should you take to safely regain control?

  1. A
    Apply firm, continuous pressure to the footbrake to force the tyres through the surface water.
  2. B
    Depress the clutch completely and coast in neutral until the vehicle clears the wet area.
  3. Release pressure smoothly from the accelerator and keep the steering straight until tyre grip is restored.Answer
  4. D
    Steer sharply towards the road verge to find asphalt with better surface drainage.

Answer

Release pressure smoothly from the accelerator and keep the steering straight until tyre grip is restored.
When a vehicle aquaplanes, water builds up in front of the tyres faster than the tread grooves can disperse it, causing the car to float on a water wedge. The correct and safest response is to release pressure from the accelerator smoothly while keeping the steering straight. This allows natural deceleration until the tyre tread pushes through the water and re-establishes mechanical grip on the road surface.

Step-by-Step Solution

1
Identify the onset of aquaplaning (characterised by very light, unresponsive steering and engine revs rising).
Driver recognises that tyres are riding on a film of water rather than contacting the tarmac.
Correct identification prevents panicked and dangerous driver reactions such as abrupt braking or sudden steering.
2
Smoothly lift off the accelerator pedal while holding the steering wheel firmly in a straight line.
The car gradually decelerates via rolling resistance and gentle engine braking without locking the wheels.
As speed drops, the tyre tread channels can successfully clear water beneath the contact patch, re-establishing physical grip on the road surface.

Key Concept

Driver response to aquaplaning and restoring tyre adhesion on water-covered roads
Estimated Time:50s
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Topics

Wet Weather and Aquaplaning

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