"Roads in Dublin" . "regional roads" . . . . . . . . "National Primary Route" . "R148 road" . "road (Northern Ireland)" . "'R' roads" . "contemporary numbering system" . "Road from Dublin to" . "current road system of Ireland" . "national primary route" . "'N' roads" . "900 new speed zones" . . "Roads in Ireland" . "R402 road" . "road route" . "national primary road" . "national road network" . . . "National Primary route" . . "road" . "route" . "Irish road numbering scheme" . "national route" . "old road system of Ireland" . "N13–N16" . "National Primary Routes" . "roads" . "a road" . "National Secondary Route" . "National primary route" . "Irish road network" . "national roads" . "national routes" . "regional road" . "L2545" . "Dublin and Ratoath Road" . . "National primary roads" . . "Route number" . "Irish roads" . "main road" . "motorway" . "national route network" . "Road from Dublin" . . "Roads in Ireland" . . "in Ireland" . "Northern Ireland" . "Dublin and Malahide Road" . . "national network of roads" .