Police said recording of alcohol-related crashes was higher on urban roads because of an increased police presence in high-traffic areas.
Rotorua road policing manager Senior Sergeant Brendon Keenan said local police were trying to combat recidivist drink drivers, many of whom had up to three separate drink-driving convictions.
While drink driving was a problem across all age groups, younger drivers tended to be more responsive to road safety messages as opposed to middle-aged drivers for whom drinking and driving was more entrenched.
Tomorrow Rotorua police will be out and about on state highways as part of Operation Presence, with numerous checkpoints set up.
National manager road policing Superintendent Carey Griffiths said alcohol-related crashes were often associated with speed and not wearing seatbelts.
"Drink drivers are not only killing themselves, they are killing other innocent road users."