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DDifficulty 2/5

An adult driver drives a bus carrying 35 passengers. What maximum blood alcohol concentration does the rule set for this driver?

Correct answer

0.3 grams of alcohol per 1000 cubic centimetres of blood.

0.3 grams per litre of blood, equivalent to 0.3 grams per 1,000 cm³. The corresponding breath limit is 0.15 milligrams per litre, a different unit and test. This case falls within passenger transport with more than nine seats, counting seats rather than just people currently on board. That limit does not mean the concentration is safe or authorise driving under the influence: the safe choice when driving is not to drink.

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  • 0.5 grams of alcohol per 1000 cubic centimetres of blood.

  • 0.15 grams of alcohol per 1000 cubic centimetres of blood.

  • 0.3 grams of alcohol per 1000 cubic centimetres of blood.

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