Police mistakenly attached the name of a non-existent road to a speed camera.
Traffic cams show a long line of cars crawling along Auckland's Southern Motorway.
The triple fatality is raising questions about State Highway 8.
The person died at the scene.
Three others have serious injuries and a further two have moderate injuries.
AA says the change would bring New Zealand in line with what countries with better road safety records do.
Police are still investigating the circumstances of the crash.
It's forced traffic to be diverted along the Wellesley St exit.
Diversions are being put in place and motorists are warned to expect delays.