Emergency services are at the scene of a serious crash between a car and a truck at the intersection of State Highways 1 and 29, Karapiro.
Police were called about 10.35am.
One person has been transported to hospital with serious injuries.
The road is currently blocked, and will be closed for a period of time while a vehicle is removed.
Diversions will be in place.
Motorists are advised to avoid the area.
Meanwhile a separate crash is blocking SH29 800m east of the intersection with SH1 in both directions. NZTA has warned motorists to expect delays and to delay their journeys.