Motorists are being urged to drive with care today, with widespread icy patches on roads.
Temperatures aren't expected to rise above 6 degrees today, after a night of sub-zero conditions.
Black ice is a particular danger on sheltered roads.
Road Safety Authority CEO Moyagh Murdoch says it's also important to remove all ice and snow from your car.
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This video has some great advice for driving on icy roads. 🚛🚌🚗🚕 https://t.co/fHrbMTT6Fk
— AA Roadwatch (@aaroadwatch) November 23, 2017
