A number of traffic lights are currently out of action in Dublin and Meath, while gardaí have issued warnings about excess surface water due to heavy rain.
In south Dublin, traffic lights are out of action in Ranelagh village and commuters are being warned to expect delays.
Motorists are being advised to approach the Ranelagh/Chelmsford Rd with care.
In Meath, traffic lights are also out of action on the N2 Dublin/Monaghan Rd at Slane Bridge.
N7 Westbound: Stop start traffic from J4 Rathcoole due to volume and rain. About 20 mins from J9 Naas to Red Cow— Live Drive (@LiveDrive) March 3, 2017
Meanwhile, gardaí are urging motorists in Cork to drive slowly in areas with excess surface water.
Flooding has been reported on the N40 South Ring Rd and on the Rathcooney Rd near the Banduff Rd junction and in Clonakilty.
In Tipperary, there has been a breakdown on the M7 Limerick/Dublin Rd northbound between J27 Birdhill and J26 Nenagh West.