Bahrain Heavy Vehicle Theory Practice Questions - Bahrain Heavy Vehicle Driving Licence Theory Test (Private Transport And Special Use Classes) Exam

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What happens automatically to a heavy vehicle's spring parking brakes if air pressure drops catastrophically below 20–45 psi?

The truck accelerates to full speed The heavy mechanical coil springs overcome remaining air pressure and apply the emergency parking brakes fully The transmission shifts automatically into neutral The steering wheel locks in the straight-ahead position

Correct Answer:

The heavy mechanical coil springs overcome remaining air pressure and apply the emergency parking brakes fully

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