Practice question

In an Arizona CDL Combination Vehicles scenario, what should the driver do for safe uncoupling?

Set trailer brakes, chock on grades, lower gear before release, and store lines on dummy couplers or hangers.
Leave lines dragging
Use the trailer hand valve as the main solution
Skip the outside inspection

Answer: A — Set trailer brakes, chock on grades, lower gear before release, and store lines on dummy couplers or hangers.

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