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Practice quizzes / Pennsylvania Driver's License Knowledge Test / Question 167667
Practice question

When driving a commercial vehicle, what is the maximum legal blood alcohol concentration (BAC) allowed?

  1. 0.08%
  2. 0.05%
  3. 0.04%
  4. 0.00%

Answer: C — 0.04%

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

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