Emergency services responded to calls after a Fonterra milk tanker flipped into a ditch on State Highway 50, near Ongaonga in Central Hawke's Bay yesterday.
A Police spokesperson said initial reports suggested the driver was trapped but was then freed from the cab.
They would not specify how the truck came off the road.
The driver received moderate to minor injuries.
The accident occurred around 1.10pm near Blackburn Rd and Pettit Valley Rd.