Correct answer
0.25 milligrams of alcohol per litre of breath
Article 20 of the Traffic Regulations states that vehicle and bicycle riders may not use roads covered by legislation on traffic, motor vehicle movement and road safety with a blood alcohol level above 0.5 grams per litre, or a breath alcohol level above 0.25 milligrams per litre.
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0.50 milligrams of alcohol per litre of breath
0.25 milligrams of alcohol per litre of breath
0.10 milligrams of alcohol per litre of breath
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