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Practice quizzes / Illinois CDL Doubles and Triples Practice Questions - Illinois CDL Doubles and Triples Endorsement Test Exam / Question 100236
Practice question

If the second trailer does not have spring brakes before uncoupling, what should be done?

  1. Chock the wheels
  2. Release the fifth wheel first
  3. Open the cargo seal
  4. Leave it unsupported

Answer: A — Chock the wheels

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

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