Police are appealing to motorists to slow down, wear restraints and not drive after drinking alcohol.
The number of fatal and serious injury crashes in Northland is on the rise and police say the causes of these crashes include speed, alcohol and not wearing restraints.
Northland Road Policing manager Inspector Murray Hodson says five motorcyclists, six car drivers and one pedestrian have been killed on the region's roads so far this year. Nine people had died in vehicle crashes at this time last year.
"There has also been a spike in people hospitalised [for more than three days] by serious injury. This means ongoing suffering for those injured and their families. The margin between being seriously injured and dying is fine."
Mr Hodson says motorists are not following the basics of good driving such as slowing down and driving to the conditions, not driving after drinking alcohol, wearing restraints (seatbelts and approved child seats), and generally concentrating on their driving.