The R148 road is one of Ireland's regional roads which was classified following the opening of a by-passed national primary road.
The R132 road is one of Ireland's newest regional roads, having been classified following the opening M1 motorway which by-passes most of the old N1 route. The R132 is 98.9 kilometres (61.5 mi) long.
The R135 road is one of Ireland's newest regional roads, being a reclassification of those sections of the former N2 which were bypassed when the N2(M2) Ashbourne By-Pass dual carriageway opened in 2006, and when the Carrickmacross, Castleblayney & Monaghan bypasses were completed.
The R108 road is a regional road in Ireland, linking Drogheda in County Louth to Christchurch Place, Dublin.
The North Circular Road, designated as the R101 regional road, is an important thoroughfare on the northside of Dublin, in Ireland. It is the northside equivalent of the South Circular Road.
The R125 road is a regional road in Ireland, linking Kilcock on the County Meath / County Kildare border to Swords in County Dublin via the towns of Dunshaughlin and Ratoath.
The R112 road is a regional road in south Dublin, Ireland. It begins at the junction with the R148 road at Chapelizod and arcs southeastwards, then eastwards across the middle of south Dublin, ending at the Mount Merrion junction of the R138. The road is a single carriageway, with cycle lanes on some stretches. Improvements to the road have been made over the last 10 years, the most significant being at Dundrum Cross where the road was widened to make room for the new Luas bridge and Dundrum bypass.
The R114 road is a regional road in south Dublin, Ireland. The road runs from the city centre to Brittas in remote southwest County Dublin via Rathmines, Rathgar, Rathfarnham, Knocklyon, Firhouse and the mountainous area of Boharnabreena. The final stretch of the road runs just north of the border between County Dublin and County Wicklow, parallel to the Brittas River and a canal to the River Camac, which rises just to the north.
The R111 road is a regional road in south Dublin, Ireland, and includes a major element of the Dublin Outer Orbital Route.
The R147 is a regional road in Ireland. Its first section runs from St Peters Church in Phibsborough, Dublin to its junction with the M50. It then follows the route of a former section of the N3 between Clonee and Kells. It serves as an alternative route for non-motorway traffic and traffic wishing to avoid tolls on the M3.
The R105 road is a regional road in north Dublin, Ireland. It travels from the city centre to Howth, and loops at both ends; the road fully encircles Howth Head. Along the way, the road passes through Fairview, the western end of Clontarf, Killester, Raheny, the coastal edge of Kilbarrack and Sutton. Its biggest component is Howth Road.
The R106 road is a regional road in north Dublin, Ireland. It runs from Sutton, passing Baldoyle, Portmarnock and Malahide before finishing in Swords.
The R109 road is a regional road in west Dublin, Ireland. It runs from Kylemore Road via Chapelizod, the Phoenix Park and the western edge of the city centre.
The R118 road is a regional road in south Dublin and Dún Laoghaire–Rathdown, Ireland. It links Kildare Street to Cherrywood.
The R121 road is a regional road in south County Dublin and Fingal, Ireland.
The R122 road is a regional road in Dublin, Ireland.
The R802 road is a regional road in Dublin, Ireland.
The R804 road is a regional road in Dublin, Ireland.
The R815 road is a regional road in Dublin, Ireland.
The R138 road is a regional road in Ireland. It commences at the south end of O'Connell Bridge in Dublin city centre. It proceeds along D'Olier Street, College Street.
