Practice question

For an NJ commercial vehicle equipped with air brakes, what does the air pressure gauge tell the driver?

  1. The engine oil pressure
  2. The pressure available in each air storage tank (or each system in a dual setup)
  3. Speed of the compressor
  4. Trailer weight

Answer: B — The pressure available in each air storage tank (or each system in a dual setup)

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 →