Texas CDL Air Brakes Practice Questions - Texas CDL Air Brakes Knowledge Test Exam

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Under Texas CMV Driver Handbook Section 5, what is the proper position of the trailer air supply knob (red 8-sided) when driving with a trailer connected?

Pulled out (exhausted) Pushed in (supplying air to trailer) Halfway Removed

Correct Answer:

Pushed in (supplying air to trailer)

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