Regional Road, including: Regional Road, R432 Road, R178 Road, R509 Road, R691 Road, R518 Road, R293 Road, R296 Road, R512 Road, R113 Road, R176 Road, ... R203 Road, R236 Road, R148 Road, R403 Road

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More info: A regional road in Ireland is a class of road not forming a major route (such as a national primary road or national secondary road), but nevertheless forming a link in the national route network. There are over 11,600 kilometres of regional roads. Regional roads are numbered with three digit route numbers, prefixed by "R" (e.g. R105).