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 R639 road is one of Ireland's regional roads. Once designated the N8 national primary road, it was reclassified in stages as the R639 following the progressive opening of sections of the M8 motorway, which rendered the single carriageway N8 redundant as a national primary road. By-passed sections of the old N8 were generally reclassified as R639 as soon as a new section of M8 opened, thereby increasing the length of the R639. With the completion of the M8 on 28 May 2010, the R639 now stretches from Durrow, County Laois to Cork, running through counties Laois, Kilkenny, Tipperary, Limerick and Cork.
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 R110 road is a regional road in Ireland which goes from St Stephen's Green to Red Cow, Dublin. Its route is completely within the Dublin urban area.
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 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 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 R118 road is a regional road in south Dublin and Dún Laoghaire–Rathdown, Ireland. It links Kildare Street to Cherrywood.
The R119 road is a regional road in Dún Laoghaire–Rathdown, Ireland.
The R122 road is a regional road in Dublin, Ireland.
The R127 road is a regional road in Fingal, Ireland.
The R131 road is a regional road in Dublin, Ireland.
The R802 road is a regional road in Dublin, Ireland.
The R803 road is a regional road in Dublin, Ireland.
The R811 road is a regional road in Dublin, Ireland.
The R815 road is a regional road in Dublin, Ireland.
The R816 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.
The R137 road is a road in Dublin, Ireland connecting College Green in the city centre to the junction of the M50 and N81 routes, via Dame Street, Patrick Street, Harold's Cross, Terenure, and Templeogue.
