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:''For the Israeli National Roads Authority, see National Road Company of Israel.'' The National Roads Authority (NRA) ((アイルランド語:An tÚdarás um Bóithre Náisiúnta)) was a state body in Ireland, responsible for the national road network. The NRA was established as part of the Roads Act 1993〔(【引用サイトリンク】title=Roads Act 1993 )〕 and commenced operations on 23 December 1993 in accordance with S.I. 407 of 1993. The RPA merged with the Railway Procurement Agency and was effectively dissolved on 1 August 2015. The merger of the two agencies is called Transport Infrastructure Ireland. County councils remain responsible for local and regional roads, as well as various tasks like setting speed limits. The NRA, meanwhile, was 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 of National Primary Routes and of National Secondary Routes.〔(【引用サイトリンク】title=Network Maintenance )〕 The body also plays an environmental and archaeological role as part of the road building programme, publishing an archaeology magazine, ''seanda'', since 2006. Since 2007 it has managed the eToll toll payment interoperability system operated by Egis Projects. The NRA was headed by a Chief Executive Officer (CEO) who reported to the NRA's board which in turn reported to the Minister for Transport. There were four departmental heads who reported to the CEO: the Head of Finance and Administration, the Head of Engineering Operations, the Head of PPP (Public Private Partnerships), Strategic Planning and Commercial Operations and the Head of Corporate Affairs and Professional Services.〔(【引用サイトリンク】title=Organisational Structure )〕 In the previous decade, the NRA was mainly concerned with the extensive expansion of Ireland's motorway network under the National Development Plan (NDP). The Transport 21 element of the NDP involved improvements to Ireland's transport networks including its roads. The NRA was responsible for making major improvements to key roads, especially the Major Inter-Urban Routes. These routes were the N1/M1 (Dublin - north of Dundalk), the N4/M4/N6/M6 (Dublin - Kinnegad-Galway), the N7/M7 (Dublin-Limerick), the N8/M8 (Portlaoise-Cork) and the N9/M9 (near Naas-Waterford). Major improvements were also made to many other national primary and national secondary routes, most notably the Atlantic Corridor routes (N15, N17, N18, N20, N24, N25) and the N11/M11 (Dublin - Wexford). ==See also== *Roads in Ireland *Motorways in the Republic of Ireland *National primary road *National secondary road *Regional road *Local Roads in Ireland *Atlantic Corridor *Dublin Port Tunnel *Jack Lynch Tunnel *History of Roads in Ireland *Trunk Roads in Ireland *Road signs in the Republic of Ireland *Road speed limits in the Republic of Ireland *Vehicle registration plates of Ireland *Transport in Ireland *List of Ireland-related topics 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「National Roads Authority」の詳細全文を読む スポンサード リンク
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