In a week or so we'll start to learn how New Zealand's binge drinking culture will react to new laws that reduce the legal booze limit for drivers aged 20 and over.
The breath alcohol limit for drivers aged 20 and over is dropping from 400mcg of alcohol per litre of breath to 250mcg, and the blood alcohol limit is lowered from 80mg of alcohol per 100ml of blood (.08) to 50mg (0.05).
The penalties change too. If you are caught driving between the new limit and 400mcg, it is an instant $200 fine plus 50 demerit points. The fine is $700 for a blood alcohol result - the more expensive fine covers the cost of the blood test and its analysis.
Will it deter drivers? It has to, but the positive affect of the change will take months, possibly years to assess.
Immediately, it changes the dynamic of socialising.