New York CDL Double/Triple Trailers Practice Test

A driver is reviewing secure rear trailer. Which answer matches official New York DMV or FMCSA guidance?

landing gear must be fully raised first all shut-off valves must be removed before backing under the rear trailer, its brakes must be locked and/or wheels chocked safety chains must be permanently disconnected

Correct Answer:

before backing under the rear trailer, its brakes must be locked and/or wheels chocked

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