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Practice quizzes / NJ CDL Air Brakes Test Practice Questions - New Jersey Commercial Driver License (CDL) Air Brakes Knowledge Test Exam / Question 147820
Practice question

For an NJ commercial vehicle equipped with air brakes, at what pressure must the low air pressure warning device activate at the latest?

  1. At 30 psi
  2. At 60 psi or higher
  3. At 90 psi
  4. At 120 psi

Answer: B — At 60 psi or higher

The correct answer is shown above. Try the full quiz for additional practice.

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