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Difficulty: EasySkidding Causes and Correction

When driving in poor weather conditions, which driver action is most likely to cause a vehicle to skid?

  1. A
    Increasing the gap behind the vehicle in front to double the standard following distance
  2. Making sudden or harsh steering and braking inputsAnswer
  3. C
    Maintaining tyre tread depth significantly above the legal minimum requirement
  4. D
    Changing down to a lower gear smoothly to reduce vehicle speed gradually

Answer

Making sudden or harsh steering and braking inputs is the action most likely to cause a skid.
Skidding is almost always caused by driver error. Making sudden, violent, or harsh inputs with the brakes, steering wheel, or accelerator forces the tyres beyond their grip limits, causing them to slide across the road surface.

Step-by-Step Solution

1
Identify the primary physical cause of a skid
A skid occurs when the physical demand placed on the tyres exceeds the available grip between the tyres and the road surface.
Tyres have a finite threshold of adhesion, which is further reduced in poor weather.
2
Evaluate the effect of sudden control inputs versus smooth driving techniques
Sudden or aggressive actions (heavy braking, sharp steering, abrupt throttle application) demand immediate grip shifts that break traction.
Smooth, progressive control inputs distribute forces gradually and maintain tyre grip.
3
Select the option describing harsh control inputs
Harsh steering and braking inputs are identified as the direct driver cause of skidding.
Driver error through abrupt control inputs is the leading cause of skidding on UK roads.

Key Concept

Skids are primarily caused by driver error involving excessive speed or sudden, harsh control inputs that exceed available tyre grip.
Estimated Time:45s
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Topics

Skidding Causes and Correction

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