Practice question

Which answer best matches the official guidance for converter dolly definition?

  1. A grease pump for a fifth wheel
  2. A tractor-only brake valve
  3. A cargo tie-down inside a trailer
  4. A coupling device with one or two axles and a fifth wheel

Answer: D — A coupling device with one or two axles and a fifth wheel

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

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