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Practice quizzes / NJ CDL Combination Practice Questions - New Jersey CDL Combination Vehicles Test Exam / Question 147993
Practice question

During a New Jersey tractor-trailer crossed air lines review, why are crossed air lines dangerous?

  1. They can leave trailer brakes inoperative
  2. Drive faster to straighten the trailer
  3. Disconnect the electrical cord
  4. Assume the fifth wheel is locked

Answer: A — They can leave trailer brakes inoperative

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

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