A truck driver who is alleged to have fallen asleep at the wheel escaped without injuries after toppling his bread truck in the early hours on State Highway 2.
Emergency services were called about 3am Saturday, where the Tip Top bread truck had tipped on its side, near East Taratahi Rd.
Carterton fire chief Wayne Robinson said the driver, from Wellington, was travelling north on an overnight bread delivery run when he was believed to have fallen asleep at the wheel and veered into the southbound lane.
Mr Robinson said the truck had likely rolled after the driver tried to correct himself, with the vehicle ending up lying on its right side across the double left-hand lane. "He had clearly lost control," he said.
"Thankfully, there was hardly any other traffic at that time.