Practice question

What should a driver do if the air brake system loses air pressure while driving?

  1. Continue driving as usual.
  2. Stop the vehicle safely and inspect the air system.
  3. Use the emergency brake to continue driving.
  4. Call for assistance and proceed with the trip.

Answer: B — Stop the vehicle safely and inspect the air system.

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

Practice more: CDL Air Brakes Endorsement Test →