Alcohol is thought to have been a factor in this morning's crash that injured eight people and blocked the main route to Auckland airport for hours.
The scene on George Memorial Drive has now been cleared and traffic is flowing smoothly, police said.
The crash between two vehicles happened about 2am.
One of the vehicles was a taxi with two passengers and the other was a car containing five people, police said.
All eight, including a pregnant woman, were injured and taken to Middlemore Hospital.