Practice question

During New Jersey CDL air-brake preparation, is it correct to use the parking brake to slow or stop the vehicle while driving?

  1. Yes, in emergencies
  2. Yes, on icy roads
  3. No — the parking brake should never be used to slow a moving vehicle
  4. Yes, on long downgrades

Answer: C — No — the parking brake should never be used to slow a moving vehicle

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Practice more: NJ CDL Air Brakes Test Practice Questions - New Jersey Commercial Driver License (CDL) Air Brakes Knowledge Test Exam →