Motorists around the country have been warned to take extra care after heavy rainfall left roads flooded.
Excess surface water is causing problems in parts of Munster, Connaught and Leinster.
AA Roadwatch said drivers should use dipped headlights to improve visibility and only drive through water if they know it is not too deep for their car.
“If you have to drive through standing water, drive through the centre of the road as that is the highest point,” it added.
Met Éireann has also issued a weather warning for heavy rainfall and flash flooding.
Conditions are said to be treacherous on the M7 Dublin/Limerick Road, which was closed for a while northbound at J22 Roscrea.
Elsewhere, extra care is advised on the M8 Cork/Dublin Road both ways between Fermoy South and Cashel North, in parts of Cork city, and on the N25 Cork/Waterford Road between Middleton and Carrigtwohill.
Other parts of the country affected include the Thurles/Nenagh Road and Thurles/Newport Road in Tipperary, the Birr/Roscrea Road, routes around Tullamore, in Navan and Carrick-on-Shannon.
Excess surface water is also a problem throughout Limerick city, AA Roadwatch added.