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Zorluk: KolayStopping and Braking Procedures

When executing an emergency stop in a vehicle without an anti-lock braking system (ABS), a driver chooses the stab braking procedure. Which action correctly describes how this technique is performed?

  1. A
    Brake firmly until vehicle speed drops 5 mph below the safe speed, release the brake pedal completely, and repeat the cycle.
  2. B
    Press the brake pedal fully and hold the wheels in a continuous lockup until the vehicle stops completely.
  3. Apply the brakes all the way until the wheels lock, release the brakes immediately, and reapply them once the wheels start rolling.Cevap
  4. D
    Engage the engine retarder at its highest setting while lightly pumping the service brake pedal.

Cevap

Apply the brakes all the way until the wheels lock, release the brakes immediately, and reapply them once the wheels start rolling.
The correct answer accurately describes stab braking: applying full brake pressure until the wheels lock, releasing the pedal immediately so the wheels start rolling again to maintain vehicle control, and reapplying the brakes fully as soon as rolling resumes.

Adım Adım Çözüm

1
Identify the proper sequence for emergency stab braking on non-ABS commercial motor vehicles.
Stab braking requires cycling between full braking to lockup and immediate release.
Releasing the brakes as soon as wheels lock allows the wheels to turn again, regaining steering control before reapplying full braking force.
2
Differentiate stab braking from snub braking and controlled braking.
Stab braking intentionally locks the wheels momentarily and releases them, whereas controlled braking avoids wheel lock entirely and snub braking is used for downhill grade speed management.
Distinguishing between specialized braking procedures ensures the correct technique is selected for rapid emergency deceleration.

Anahtar Kavram

Stab Braking Procedure
Tahmini Süre:45s
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Konular

Stopping and Braking Procedures

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