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Practice quizzes / South Dakota Commercial Driver's License (CDL) Knowledge Tests / Question 178089
Practice question

Which part of the vehicle must you test during the brake system check?

  1. Only the hand brake
  2. The trailer hitch
  3. Air, service, and parking brakes
  4. Windshield wipers

Answer: C — Air, service, and parking brakes

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

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