Practice question

During a pre-trip or road scenario, which answer best matches trailer air supply control?

  1. Use the trailer hand valve for normal stopping
  2. push in to supply trailer air and pull out for emergency brakes
  3. Skip the visual check if the tug test feels normal
  4. Back or turn faster so the trailer responds sooner

Answer: B — push in to supply trailer air and pull out for emergency brakes

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

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