Practice question

What is 'jackknifing' in tractor-trailer operations?

  1. A method used to lift the truck for tire changes
  2. A dangerous skid where the trailer swings out and forms an acute angle with the tractor
  3. When the landing gear fails to retract
  4. An offloading technique for liquid cargo

Answer: B — A dangerous skid where the trailer swings out and forms an acute angle with the tractor

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