Practice question

When the brake pedal is depressed, air brakes work:

  1. Immediately.
  2. After a short delay.
  3. After about a minute.
  4. Only if the green lever on the control panel is pushed down.

Answer: B — After a short delay.

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

Practice more: New Jersey CDL Double Test 1 →