Practice question

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

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

Answer: A — lower the dolly landing gear before releasing the dolly from the first trailer

The correct answer is shown above. Try the full quiz for additional practice.

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