Motorists are being urged to drive with care as road conditions continue to be very poor around the country.
Road temperatures were below zero for most of the morning, with widespread black ice.
Severe frost overnight left roads icy in all parts of the country.
Gardaí have reported extremely dangerous road conditions in Louth, Limerick, Donegal and Waterford.
There were a number of minor accidents in Leitrim and Limerick early this morning.
Gardaí say the right hand northbound lane of the M1 is still quite slippery between Tallanstown and Dundalk.
They are appealing to motorists across the country to drive slowly and stay a safe distance from the vehicle in front.
Meanwhile in Urlingford, the Islands Road remains closed following a partial bridge collapse on Thursday, and care is still advised in Clonmel as a result of flooding there earlier in the week.
