Blood alcohol contentAustria
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244. Blood alcohol content
Blood alcohol content (BAC), more precisely called blood alcohol concentration, indicates the amount of alcohol present in a person’s blood. It is commonly expressed as a percentage, grams per litre or parts per thousand (‰). Alcohol can impair judgement, reaction time, coordination and vision even before the legal BAC limit is reached. Legal limits vary between countries and may be lower for professional, novice or young drivers.
What is blood alcohol content?
Blood alcohol content (BAC) measures the concentration of alcohol in a person’s blood and is used to assess alcohol consumption and legal driving limits.
How is blood alcohol content expressed?
BAC can be expressed as a percentage, grams of alcohol per litre of blood or parts per thousand (‰). The units commonly used depend on the country.
Can alcohol affect driving below the legal BAC limit?
Yes. Alcohol can impair driving ability before the legal limit is reached. Being below the legal BAC limit does not guarantee that a person is safe to drive.

Traffic rules
Austria