Practice question

Which answer best matches the official guidance for pintle hook warning during dolly uncoupling?

  1. Never unlock the pintle hook with the dolly still under the rear trailer
  2. Unlock it before supporting the rear trailer
  3. Unlock it while the rig is angled
  4. Use the light cord as the pintle safety lock

Answer: A — Never unlock the pintle hook with the dolly still under the rear trailer

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