Practice question

For New Jersey CDL air-brake testing, you should drain the air tanks at the end of each working day to:

  1. Save fuel
  2. Remove water and oil that collect in the tanks, which can freeze in cold weather and contaminate brake parts
  3. Reset the governor
  4. Activate the air dryer

Answer: B — Remove water and oil that collect in the tanks, which can freeze in cold weather and contaminate brake parts

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