Practice question

To test the trailer service brakes, you should:

  1. Move the vehicle forward slowly and apply the brakes with the brake pedal.
  2. Reverse the vehicle slowly and apply the brakes with the hand control.
  3. Reverse the vehicle slowly and apply the brakes with the brake pedal.
  4. Move the vehicle forward slowly and apply the brakes with the hand control.

Answer: D — Move the vehicle forward slowly and apply the brakes with the hand control.

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

Practice more: New York CDL Combination Test 1 →