New York CDL Double/Triple Trailers Practice Test

A driver is reviewing pintle hook hazard. Which answer matches official New York DMV or FMCSA guidance?

never unlock the pintle hook with the dolly still under the rear trailer because the tow bar may fly up unlocking improves alignment unlocking is required for a tug test unlocking drains the air tank

Correct Answer:

never unlock the pintle hook with the dolly still under the rear trailer because the tow bar may fly up

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