This is a number that measures how much alcohol is in your blood. Police use this number to decide if someone is drink driving. The law allows you to drive when this number is less than 0.05%.
The judge decides the punishment for people who go to court for drink driving. The judge will think about: How much alcohol was in in your body (for example 0.08% blood alcohol) How many times you were in trouble already for drink driving Most people who go to court...