Question:
What will occur if your truck has a dual air system and one of the systems loses its pressure?
A
Either the front or back brake will not be fully operational.
explanation
If one air system is very low on pressure, either the front or rear brakes will not be operating fully. This means it will take you longer to stop. Bring the vehicle to a safe stop, and have the air brakes system fixed. [California Commercial Driver Handbook]
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