Senior Sergeant Brian Benn, of Dunedin, said a car crashed into a bank on Fernhill Rd, near the Sainsbury Rd intersection, at 6.55am. There were no injuries but the car's windscreen was smashed and it had to be towed away.
At almost the same spot, a white four wheel drive crashed, coming to rest on its roof about 10.20am. Again, no one was injured.
Police asked council contractors to remove excess grit from the road, which only two days before had been extremely icy.
Snr Sgt Benn said road conditions changed rapidly.
''It's just another example of having to drive to the conditions.
''There's so many factors that a driver has to take into consideration. Excess grit is especially dangerous for cyclists and, in some cases, pedestrians.''
Police called contractors to the scene of a crash on the Cardrona Valley Rd.
At 1pm yesterday, a car rolled about 2km north of the Cardrona Hotel. Two people were taken to the Wanaka Medical Centre with minor injuries.
At 6.20am, a 29 year old Queenstown man was processed for drink driving after the Toyota Hilux he was driving left Gorge Rd. The man was not injured.
QLDC roading contractors were out gritting the main roads around Arrowtown, Dalefield and Arthurs Point last night, as black ice was forming again.
A council spokeswoman said the roads were wet and the temperature was dropping, so ''extreme caution'' would be needed on the roads this morning. Police went to the aid of a family group walking the Sawpit Gully loop track near Arrowtown yesterday afternoon.
Senior Sergeant Brian Benn, of Dunedin, said the family group - one adult male and two children, 7 and 5 - called for help at 3.45pm after realising they were stuck on the track, surrounded by ice.
Two policemen walked to the family and walked out with them.
