Illinois CDL Practice Exam

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How should Stab Braking be performed when driving?

  1. Keep the brakes engaged until the vehicle comes to a complete stop

  2. Pump the brakes quickly to avoid skidding on slippery roads

  3. Apply the brakes all the way, then release them once the wheels lock up

  4. Apply the brakes gently to maintain control during a turn

The correct answer is: Apply the brakes all the way, then release them once the wheels lock up

Stab braking is a technique specifically designed to help drivers maintain control and avoid skidding, particularly in situations where a vehicle may lose traction. The correct approach involves applying the brakes fully to achieve maximum stopping power and then releasing them if the wheels begin to lock up. This prevents skidding and allows the driver to regain control over the vehicle. The rationale for this method lies in the need to use the braking system effectively without compromising the vehicle's stability. When a vehicle's wheels lock up, it can lead to loss of steering control, which is why momentarily releasing the brakes is essential."

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