Practice question

If the air pressure warning light comes on, you should:

  1. Continue to drive normally.
  2. Drive with one foot on the accelerator and one foot on the brake pedal.
  3. Call the local law enforcement agency.
  4. Safely exit the roadway and stop.

Answer: D — Safely exit the roadway and stop.

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

Practice more: Illinois CDL Class B Knowledge Test 1 →