A car accident reduced Three Mile Hill Rd in Dunedin to one lane on Saturday night.
A police spokeswoman said they were called to the scene about 8.15pm after a car had ended up on its roof in a ditch.
Nobody was injured in the crash but police remained at the scene for traffic management for a time.
As of 9.15pm, the road remained open but traffic had been reduced to one lane.
Police reminded motorists to take care on the roads in icy conditions.
