Practice question

For the Washington CDL Air Brakes knowledge test, what is the proper way to prevent brake fade on a long downgrade?

  1. Ride the brakes lightly the whole way down
  2. Use a low gear selected BEFORE the descent, plus engine retarders, and apply service brakes only briefly and firmly
  3. Use only the parking brake
  4. Coast in neutral

Answer: B — Use a low gear selected BEFORE the descent, plus engine retarders, and apply service brakes only briefly and firmly

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