A standard drink

● In the case of beer, a standard drink equates to: a 500ml glass of 2.5 per cent alcohol-by-volume (ABV), a 330ml stubbie of 4 per cent ABV beer, or a 250ml glass of 5 per cent ABV beer.

● A 100ml glass of a 12.5 per cent wine is equivalent to 1 standard drink.

● Studies suggest that men can consume three standard drinks over two hours and still be on the right side of the legal 250mcg breath alcohol drink-drive limit.

● Women can enjoy two standard drinks over a two-hour period.

● But there are many variables including body size and what you may have eaten. If people are in any doubt, then it is best not to drink at all before driving.

Source: Hospitality NZ