Bay of Plenty police are preparing for icy road conditions tomorrow and are encouraging drivers to be equally prepared.
"When a clear cold day follows a day of rain, surplus moisture on the roads will freeze over and there is a high probability for black ice," Bay of Plenty Road policing manager Inspector Kevin Taylor said.
"Motorists, particularly those on an early commute, will need to take extreme care. Any patches on the road that appear wet will likely be ice and should be treated as such."
Higher locations such as State Highway 29 over the Kamai Ranges, SH5 through Mamaku and State Highway 1 through the Central Plateau will be particularly susceptible.
Gorges and roads with significant shaded areas, such as State Highway 36 from Pyes Pa Road, Tauranga through the Mangorewa Gorge to Rotorua, and State Highway 30 between Rotorua and Whakatane will also be high risk; as well as a number of rural roads.