Gardaí are still advising motorists not to drive unless absolutely necessary as the cold snap continues to make roads treacherous.
Gardai warned that braking distance is ten times greater when driving in icy conditions.
A number of roads around the south and west of the country were closed off because of severe ice.
It will be very cold tonight with severe frost, icy roads and some patches of freezing fog.
The frosty weather will continue tomorrow and Tuesday with bitterly cold winds in all areas.