If hydraulic brakes fail while driving, what action should you take?

Study for the Alabama CDL Class A Permit Test. Use our multiple-choice questions, detailed explanations, and helpful hints to prepare. Master the concepts and get ready for your exam!

Multiple Choice

If hydraulic brakes fail while driving, what action should you take?

Explanation:
When hydraulic brakes lose pressure, the pedal can feel soft or go to the floor. The first and most effective action is to pump the brake pedal several times to rebuild hydraulic pressure in the lines and restore braking capability. If braking remains weak, downshift to a lower gear to use engine braking and ease off speed while steering to a safe area. As a last resort, you can gradually apply the parking brake to help slow the vehicle, but do so gently to avoid a loss of control. Do not try to accelerate to regain pressure, and avoid coasting with no braking capability.

When hydraulic brakes lose pressure, the pedal can feel soft or go to the floor. The first and most effective action is to pump the brake pedal several times to rebuild hydraulic pressure in the lines and restore braking capability. If braking remains weak, downshift to a lower gear to use engine braking and ease off speed while steering to a safe area. As a last resort, you can gradually apply the parking brake to help slow the vehicle, but do so gently to avoid a loss of control. Do not try to accelerate to regain pressure, and avoid coasting with no braking capability.

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