Commercial Driver License (CDL) Class B Practice Test

What should you do if the low-air-pressure warning activates while driving?

Continue until the spring brakes apply Stop and safely park as soon as possible Pump the brake pedal rapidly to build pressure Shift to neutral and coast

Correct Answer:

Stop and safely park as soon as possible

Explanation:

A low-air warning means braking reserve is being lost. Stop safely as soon as possible and find the cause rather than waiting for automatic spring-brake application.

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