Over in the UK, research shows more drug-drivers have been arrested than drunk drivers by some forces.

Data shows over 48 percent of roadside arrests were for drug-diving, with drink-driving figures reduced.

UK correspondent Enda Brady says younger generations were more likely to consume cocaine and cannabis than drink before getting behind the wheel.

LISTEN ABOVE

Over in the UK, research shows more drug-drivers have been arrested than drunk drivers by some forces.
Data shows over 48 percent of roadside arrests were for drug-diving, with drink-driving figures reduced.
UK correspondent Enda Brady says younger generations were more likely to consume cocaine and cannabis than drink before getting behind the wheel.
LISTEN ABOVE

With a straight down the middle approach, Heather du Plessis-Allan Drive on Newstalk ZB delivers the very latest news and views to New Zealanders as they wrap up their day.