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Air Brake (Q Endorsement) Practice · Question

How does an anti-lock braking system (ABS) help during an emergency stop with air brakes?

ABS prevents wheel lock-up during hard braking, allowing the driver to steer and avoid obstacles, improving vehicle control during emergency stops.

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Question: How does an anti-lock braking system (ABS) help during an emergency stop with air brakes?

Answer options: ✅ ABS prevents the wheels from locking up, allowing the driver to maintain steering control.

  • ABS significantly shortens stopping distance on all surfaces.
  • ABS automatically applies the parking brake during an emergency.
  • ABS increases the air pressure in the brake lines.

Correct answer: ABS prevents the wheels from locking up, allowing the driver to maintain steering control.

Explanation: ABS prevents wheel lock-up during hard braking, allowing the driver to steer and avoid obstacles, improving vehicle control during emergency stops.

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