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High Quality Content by WIKIPEDIA articles! The National Roads Authority (NRA) (Irish: An tÚdarás urn Bóithre Náisiúnta) is a state body in the Republic of Ireland, responsible for the national road network. The NRA was established as part of the Roads Act 1993, and commenced operations on 23 December 1993 in accordance with S.I. 407 of 1993. County councils remain responsible for local and regional roads, as well as various tasks like setting speed limits. The NRA, meanwhile, is responsible for the planning, maintenance and construction of National Primary Routes and National Secondary Routes as well as establishing safety measures. Ireland's national road network consists of 2,739 km (1,702 mi) of National Primary Routes and 2,676 km (1,663 mi) of National Secondary Routes.