A person is in critical condition after being cut free from a serious crash in Featherston.
The incident between a truck and a car was reported to police at about 12.30 on State Highway 2.
A police spokeswoman says initial reports were the person was trapped in the car but was conscious and breathing.
A Westpac Rescue Helicopter has since taken them to hospital.
NZTA says the road is under STOP/GO traffic management and motorists should expect delays.