Practice question

For the Georgia CDL Air Brakes knowledge test, 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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