"It's extremely disappointing that we have had so many motorists allegedly over the limit, especially with all the education that has surrounded drink-driving," she said.
"We've already had two road fatalities in Northland this year and while there's no link to alcohol (in the two fatalities), drink-driving increases the risk of an accident and puts all road users at risk."
Mrs Kennett said people needed to plan their drinking better and arrange for a sober driver or alternative way to get home if they were planning on going out for drinks.
"We have noticed that people are planning better with the new, lower limit, and the majority of motorists are fine, but we've still got some people who need to think about the decisions they make about their drinking and how to get home afterwards, well in advance."