Practice question

Which statement is correct about trailer skids and jackknife?

  1. Apply the hand valve harder during a skid
  2. Trailer skids are often caused by locked trailer wheels; releasing brakes to restore rolling traction is the key recovery step when braking caused the skid.
  3. Ignore it if the tractor starts normally
  4. Use the trailer hand valve as the main solution

Answer: B — Trailer skids are often caused by locked trailer wheels; releasing brakes to restore rolling traction is the key recovery step when braking caused the skid.

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