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Class 4 Commercial Driver Practice · Question

What is the maximum allowable blood alcohol concentration (BAC) for a commercial driver while operating a Class 4 vehicle?

Class 4 drivers are held to a high professional standard and, in most provinces, having a blood alcohol concentration over 0.00% while operating a commercial ve

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Question: What is the maximum allowable blood alcohol concentration (BAC) for a commercial driver while operating a Class 4 vehicle?

Answer options:

  • 0.08% ✅ 0.00%
  • 0.05%
  • 0.02%

Correct answer: 0.00%

Explanation: Class 4 drivers are held to a high professional standard and, in most provinces, having a blood alcohol concentration over 0.00% while operating a commercial vehicle is prohibited.

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