90. If your bus or truck has dual parking control valves, you can use pressure from a separate tank to:

Air Brakesmedium

ABalance the service brake system when you are parked.

BStay parked twice as long without using up service air pressure.

CRelease the spring emergency/parking brakes to move a short distance.

Detailed Explanation

The correct answer is "Release the spring emergency/parking brakes to move a short distance.". This is based on federal CDL regulations and safety standards.

Correct Answer: Release the spring emergency/parking brakes to move a short distance.

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90. If your bus or truck has dual parking control valves, you can use pressure from a separate tank to:

Detailed Explanation

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