Practice question

For an NJ commercial vehicle equipped with air brakes, in which scenario should you NOT use the parking brake?

  1. When parking on level ground
  2. When brakes are extremely hot or wet in freezing weather
  3. Overnight in a warm climate
  4. When the trailer is full

Answer: B — When brakes are extremely hot or wet in freezing weather

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