Correct answer
0.15 milligrams per litre of exhaled air.
The limit for driving a bus is 0.15 milligrams per litre of exhaled air; the blood-alcohol limit is 0.3 grams per litre. These are different measurements and units. A legal limit does not make drinking safe: the safest choice when driving is to consume no alcohol.
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0.25 milligrams per litre of exhaled air.
0.15 milligrams per litre of exhaled air.
0.30 milligrams per litre of exhaled air.
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