Four people have died on the roads this holiday weekend, the same number as were killed over the Labour Day weekend last year.
A motorcyclist died near Greymouth yesterday after crashing into a bridge on State Highway 6 at Coal Creek.
The rider was travelling with a group of friends and speed may have been a contributing factor, police said.
Investigations were ongoing.
Two women were killed in a head-on crash near Taupo on Saturday.
A car crossed the centre line on State Highway 1 at Five Mile Bay and collided with a four-wheel-drive vehicle shortly before 3pm.
The car's 79-year-old driver died at the scene while the 53-year-old passenger of the four-wheel-drive died shortly after she was taken to Taupo Hospital.
The driver escaped with only minor injuries.
Meanwhile, police have named the man killed when a four-wheel-drive rolled into a river off the Maungatapu Track in Nelson's Maitai Valley yesterday, injuring two others.
He was 16-year-old Tod Woodman of Richmond.
Emergency services were alerted to the crash at 5.40pm by one of the vehicle's occupants, who ran from the scene to get help.
