Practice question

For the Washington CDL Air Brakes knowledge test, a CMV equipped with air brakes is parked on a steep hill. Beyond setting the parking brake, what else should you do?

  1. Leave the trailer disconnected
  2. Chock the wheels, especially if loaded or if the grade is steep
  3. Idle the engine all night
  4. Disconnect the battery

Answer: B — Chock the wheels, especially if loaded or if the grade is steep

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Practice more: Washington CDL Air Brakes Test Practice Questions - Washington Commercial Driver License (CDL) Air Brakes Knowledge Test Exam →