A fatality-free Easter holiday period helped produce the lowest road toll since records began in April.
The road toll for the month of 12 bettered the previous low, set in February this year when 16 people died. Records began in 1965.
Associate Transport Minister Simon Bridges welcomed the low total but said more still needed to be done to cut the number of road deaths.
"This is an encouraging result, but still too many people are being killed and injured on our roads, and it will be little comfort to their families and loved ones," he said.