A truck carrying fruit and vegetables rolled near Taupo after the driver reportedly fell asleep.
The crash happened at 5.15am on Saturday just south of Taupo on SH1.
The driver was not seriously injured and was taken to hospital as a precaution by ambulance.
Taupo Fire Service station officer Paul Peters said amazingly the truck did not leave the left lane of the road in the crash, coming to a stop on its side.
He understood the driver had fallen asleep while driving. Police assisted with traffic and the road was not closed.