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Practice quizzes / Iowa CDL Combination Vehicles Test Practice Questions - Iowa Commercial Driver License Combination Vehicles Test Exam / Question 106290
Practice question

Why can an empty trailer lock its wheels more easily?

  1. Less weight on the tires gives poorer traction
  2. The brakes are removed
  3. The tanks are empty by design
  4. The fifth wheel unlocks

Answer: A — Less weight on the tires gives poorer traction

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

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