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Commercial Driver's License

Category - Standard Driving

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If drivers notice that the air safety valve opens and is releasing air, it usually means?

The pressure has exceeded 150 psi.
The system is fully charged.
It means nothing, as this normal.
None of the above

Explanation

Answer: A - If the air safety valve opens and is releasing air it means that the air tanks have reached or exceeded 150 psi. The valve is set to open at this pressure. If the valve is releasing air, the driver should have a qualified mechanic look at the system.

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