Practice question

Air tanks usually hold enough compressed air:

  1. For one stop before needing to be refilled.
  2. For several stops before needing to be refilled.
  3. For a day’s worth of braking.
  4. For an unlimited number of stops.

Answer: B — For several stops before needing to be refilled.

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

Practice more: District Of Columbia CDL Air Brakes Test 1 →