Australia has strict laws about driving under the influence of alcohol. This is treated as a serious offence and any person who is found to be operating a vehicle in excess of the blood alcohol concentration (BAC) may face penalties ranging from driver's licence suspension or cancellation, demerit points, fines, or imprisonment for more serious drink driving offences.
You are not allowed to drive a car with a blood alcohol concentration (BAC) of 0.05% or higher. Keep in mind that road laws are state or territory based, but all states and territories have set similar rules. In New South Wales, you are not permitted to drive if your BAC is 0.02%.
In addition to that, if you hold a learner or probationary driver's licence, your blood alcohol level must be zero.
Refusing to undergo a breathalyser alcohol test if requested by a police officer is an offence. Now, if a driver is found to be over the legal limit, he or she will be asked to take a full blood test at a hospital or health institution. Click here if you want to know more about the drink driving penalties in each state in Australia.