The driver was taken to hospital with moderate injuries after the single vehicle crash in Princes St at 1.37pm.
The vehicle also collided with vehicles as it smashed into a tree and bench on the side of the road.
"Fortunately, there was nobody on the footpath at the time," he said.
The road was partially blocked but has since been reopened.
A Hato Hone St John spokesman said one person was assessed at the scene and was transported to Dunedin Hospital in a moderate condition.