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Difficulty: MediumSkidding Causes and Correction

When performing an emergency stop on a wet road in a vehicle fitted with anti-lock brakes (ABS), you should rapidly pump the brake pedal to prevent the wheels from locking and maintain steering control.

Answer: Answer

Answer

False
The statement is false because vehicles equipped with anti-lock brakes (ABS) require firm, sustained pressure on the footbrake pedal during emergency braking. ABS automatically senses when wheels are about to lock and modulates brake fluid pressure rapidly to allow the driver to steer while braking. Manually pumping the pedal interrupts this automated process and increases the overall stopping distance.

Step-by-Step Solution

1
Identify the vehicle's braking configuration and the road conditions described in the scenario
The vehicle is equipped with anti-lock brakes (ABS) operating on a slippery, wet road surface during an emergency stop.
Different braking systems require fundamentally different driver inputs during emergency braking and skid prevention.
2
Evaluate how ABS functions during hard braking on low-friction surfaces
ABS automatically monitors wheel rotation and modulates brake pressure multiple times per second when sensors detect impending wheel lock-up.
Automated pulsing prevents wheels from locking while preserving directional steering control.
3
Determine the correct driver action for an ABS-equipped vehicle
The driver should depress the brake pedal firmly and keep it fully applied until the vehicle stops.
Manually releasing or pumping the footbrake deactivates and resets the ABS cycle, significantly increasing stopping distance and destabilising the car.

Key Concept

ABS Operation and Emergency Braking Technique
Estimated Time:45s
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Topics

Skidding Causes and Correction

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