A motorcyclist is in critical condition after colliding with a car on State Highway One in Northland.
Another motorcyclist who also collided with the southbound car at Three Bridges, north of Kawakawa, is in serious condition.
The crash occurred just before midday.
A landing site was being prepared to take the motorcyclists by helicopter from the scene.
Diversions are being arranged through Paihia on State Highways 10 and 11.