Ohio CDL Doubles And Triples Endorsement Test Practice Questions - Ohio CDL Doubles And Triples Endorsement Test Exam

Why must the converter dolly air tank drain valve be closed before travel?

The dolly air tank drain valve must be closed before travel so the tank can hold air. open to cool brakes removed for highway trips used as a fuel drain

Correct Answer:

The dolly air tank drain valve must be closed before travel so the tank can hold air.

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