The area from Oamaru to Balclutha had recently experienced severe frosts and other weather events which made for challenging driving conditions, and more of this was to come.
Senior Sergeant Steve Larking, the road policing manager for Otago Coastal, said today drivers needed to keep their speed down, allow plenty of stopping distance and be mindful of black ice.
"When a clear and cold day follows a day of rain, surplus moisture on the roads will freeze over and create a high probability for black ice.
"Motorists, particularly those on an early commute, will need to take extreme care when driving. Any patches of road which appear wet will likely be ice and should be treated as such."
People should also check that their vehicles and tyres were roadworthy and ensure all windows were completely clear of ice before getting behind the wheel.
"We also recommend drivers carry a fully charged mobile phone and have a blanket, snacks and water on hand in case of an emergency or a breakdown," Snr Sgt Larking said.
"Monitoring weather conditions and being prepared before you hit the road are simple steps to take to ensure you get to your destination safely."
