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  • Aged under 20 years of age - You must not drive if you have more than 30 milligrams of alcohol per 100 millilitres of blood, or more than 150 micrograms of alcohol per litre of breath. This is effectively a zero limit-consuming just one alcoholic drink will mean you can be charged with drink driving.
  • Aged 20 years of age or over - You must not drive if you have more than 80 milligrams of alcohol per 100 millilitres of blood, or more than 400 micrograms of alcohol per litre of breath.

    As it is difficult to assess how many alcoholic drinks you can have before you reach this limit, the best advice is: If you drink at all, DO NOT drive.

    Limits can be easily affected by factors such as your gender, your size and the amount of food you have eaten.

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14y ago

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