A Status Yellow Low temperature/ice warning is in place for the entire country until 11 this morning.
Widespread icy conditions are being reported across the region again this morning.
Particular care is needed on secondary and minor roads.
Gardai are advising motorists to reduce your speed, leave extra space to brake and keep manoeuvres gentle.
Stick to main routes where possible as they are more likely to have been gritted.
The Ballina to Crossmolina road is described as very slippery this morning and generally in the Ballina area, motorists are advised while the temperature gage may read up to 3 degrees, that is deceptive in terms of the road conditions. Extreme caution is advised.
Gardaí have reported treacherous conditions on the Collooney/Ballysadare Rd (R290) and have advised motorists to use an alternative route if possible.