Practice question

For a Pennsylvania CDL combination vehicle, when inspecting the fifth wheel before coupling, you should check for:

  1. Damage, proper lubrication, mounting, and open locking jaws
  2. Tire pressure on the trailer axles
  3. The color of the glad-hand seals
  4. The trailer cargo manifest

Answer: A — Damage, proper lubrication, mounting, and open locking jaws

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Practice more: Pennsylvania CDL Combination Practice Questions - Pennsylvania CDL Combination Vehicles Test Exam →