A neighbour said she heard a loud bang, a screech of truck brakes and tyres, then a few seconds later "an almighty crash" as the car that had travelled about 100 metres downhill after the collision, slammed into a stone wall.
The woman said she knew it was a bad collision and was dialling 111 as she ran outside to see what had happened.
Acting police Sergeant Mike Greenwood said it appeared the car pulled out in front of the truck without warning, and the driver lost control. Debris was scattered across the four lanes of the road.
Northbound traffic was detoured along Kensington Ave and traffic heading the other way sent along Manse St; a long line of northbound trucks that couldn't turn waited until the all-clear was given after concerns about fuel spilt on the road.
It was the second crash involving a logging truck in three days, after a fully-laden logging truck rolled on State Highway 1 south of Whangarei on Monday morning. It lost control near the Springfield Rd intersection, tipped over, veered into the opposite lane and lost the load of logs.
Both the truck and logs narrowly missed an oncoming car. The driver managed to crawl from the vehicle and was taken to Whangarei Hospital with moderate injuries. A mechanical fault is thought to be the cause of that accident.