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Question 37 - Alabama CDL Air Brakes discussion
In a vehicle with dual parking control valves, once air pressure is lost and the spring brakes come on:
A.
You will be unable to move the vehicle.
B.
A separate air tank can be used to release the spring brakes for a short period of time.
C.
You can use the spring brakes to continue driving normally.
D.
The air tanks will automatically refill to a safe air pressure level.