Practice question

For the Washington CDL Air Brakes knowledge test, 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: Washington CDL Air Brakes Test Practice Questions - Washington Commercial Driver License (CDL) Air Brakes Knowledge Test Exam →