A man who drove into and seriously injured a road worker near Turakina in April appeared in Whanganui District Court on Tuesday.
Reuben Lindsay Hill had pleaded guilty to charges of dangerous driving causing injury and failing to stop to ascertain injury during a court appearance in July.
The female road worker suffered serious injuries in the April 29 incident. She was in hospital for 11 days and needed three surgeries.
She was hit while placing road cones in a 30kph area. Hill was travelling faster than that, and later said he had fallen asleep at the wheel.
He was stopped by police shortly afterward, and told them he thought he had only hit road cones.