The holiday road toll stands at three after two crashes in the North Island and one in the South Island.
The official road toll period began at 4pm yesterday and ends at 6am on January 4.
In the latest fatal crash, a woman died while trapped in her car after it collided with a light truck on State Highway 3, south of Taranaki at 12:15pm today.
Central Communications inspector Paul Jermy said the incident happened near the intersection of Richmond Rd, south of Waitara.
"I understand [the car] is significantly damaged. She was trapped in there initially, and because it was a small car versus light truck, it was fairly significantly damaged.''
"She was still trapped when police arrived at the scene and she died shortly afterwards, I think prior to even being able to be freed.''
He said it was too early to determine the cause of the crash, however speed and alcohol were not believed to be factors.
The two occupants of the light truck escaped the crash uninjured, he said.
He said ambulance, fire and police were called to the scene. Police were still in attendance and the Serious Crash Unit were on their way to the site, he said.
The death would be referred to the coroner, he said.
Diversions were in place around the scene, but a couple of lanes around the crash scene were expected to open up later today, he said.
The State Highway was the main route up the West Coast of the North Island, and was fairly heavily used by motorists, he said: "It's quite a busy stretch of road, and I understand it's quite busy there today.''
Holiday accidents claimed the lives of two others in separate accidents this morning.
One driver died in an accident on Waiuku Rd, between Wily and Titi Road at about 8am this morning.
Police said the driver of the car which drifted off a road south of Auckland was killed when the vehicle hit a totara tree and flung the driver from the vehicle.
Diversions are in place on Wily, Hill and Masters roads.
Earlier this morning, one person died after their car ran into the Avon River off New Brighton Road in Christchurch, shortly after 4am.
Fire, ambulance and police were called to the scene.
Neither the age or sex of the dead person has been released.
