New York CDL Double/Triple Trailers Practice Test

A driver is reviewing uncouple dolly first step. Which answer matches official New York DMV or FMCSA guidance?

lower the dolly landing gear before releasing the dolly from the first trailer release the pintle hook first under the rear trailer raise all supports first open every shut-off valve first

Correct Answer:

lower the dolly landing gear before releasing the dolly from the first trailer

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