Practice question

Which choice best matches ALEA/FMCSA guidance on kingpin and locking jaws?

  1. The jaws should be removed after coupling
  2. The kingpin is only an electrical connector
  3. The kingpin must be locked inside the fifth wheel jaws
  4. The kingpin should rest on top of closed jaws

Answer: C — The kingpin must be locked inside the fifth wheel jaws

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