SH12 PAPAROA, ROAD CLOSED - 2:40PM A serious crash has now CLOSED a section of SH12 just east of Paparoa. Please follow the directions of emergency services. Expect delays: https://t.co/czRbt8EyQw ^TP pic.twitter.com/QxbAcYA5xo
— Waka Kotahi NZTA Auckland & Northland (@WakaKotahiAkNth) March 19, 2018
A number of people are also trapped in a serious crash on State Highway 2 between Central Hawke's Bay and Hastings.
Police were called to the two-car crash about 4pm. It was too soon to say if anyone was injured, police said.
Since the beginning of the year 91 people have died in car crashes compared to 75 at the same time last year.
Two teenagers died early yesterday, after a high-speed head-on collision at Amberley, north of Christchurch.
The deaths come after a horror weekend on New Zealand's roads when nine people were killed in crashes between March 9 and 11.
Last week, assistant commissioner for road policing, Sandra Venables, called the high number "disappointing".
"Decisions drivers make impact not only them and those in their vehicle, but everybody else on the road as well," she said.
She said police focused on addressing behaviour they believed was behind a bulk of crashes: "people driving too fast for the conditions, people driving impaired, people driving distracted and people not wearing seatbelts".
"Nobody wants to share the road with someone who is taking risks."