Many roads around Dunedin and the surrounding areas are becoming icy as temperatures plunge in the early evening after a day of snow, and motorists are being urged to drive with caution. A crash in icy conditions on Stuart St in Dunedin caused delays for citybound motorists from about 8.25am. Three Mile Hill Rd in Dunedin closed due to snow at about 2.30am. Three Mile Hill Rd closed due to snow at about 2.30am. Snow fell on Crown Range Rd overnight but the route remains open despite the freezing, icy conditions though chains are required for all motorists.