Practice question

For the Washington CDL Air Brakes knowledge test, what is the proper gear selection for a long downgrade with a loaded CMV?

  1. Use a higher gear than for climbing the same grade
  2. Use a lower gear than you would use to climb the same grade, selected BEFORE starting down
  3. Stay in neutral to coast
  4. Highest gear available

Answer: B — Use a lower gear than you would use to climb the same grade, selected BEFORE starting down

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 →