Practice question

For an Wisconsin CDL air-brake vehicle, while driving, the low air pressure warning light comes on. What should you do?

  1. Continue to your destination but watch the gauge
  2. Bring the vehicle to a safe stop as soon as possible and find the problem
  3. Apply the parking brake while still moving
  4. Pump the brake pedal to build pressure

Answer: B — Bring the vehicle to a safe stop as soon as possible and find the problem

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

Practice more: Wisconsin CDL Air Brakes Practice Questions - Wisconsin CDL Air Brakes Knowledge Test Exam →