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Norwegian national road (Norwegian: Riksvei/Riksveg abbr. Rv; literally: road of the rike/realm), are roads thus categorized by the Norwegian Public Roads Administration (Statens vegvesen) which also maintains them. In 2007 there were 27,343 km of this class of Norwegian roads, which constituted 29.4% of public roads in Norway.〔 (Statistisk sentralbyrå: Table 416: Offentlige veier etter fylke 1. januar 2007 ) (public roads by county as of January 1, 2007) from Statistisk sentralbyrå Note: The numbers encompass city streets. For municipal roads not all municipalities are up to date.〕 From 2010, after an administrative reform, most of the national roads were transferred to the counties. 17,200 km of national roads were transferred along with an annual compensation of 6.9 billion NOK for maintenance. So as of January 1, 2010 there were 10,451 km of national roads left. The national roads are selected by the criteria of being important for long-distance travel. Also some roads connecting to airports are included. All national roads have an asphalt concrete cover. Exceptions are some former national roads that have been given special status or protection. The "gravel roads package" was a governmental plan which saw to it that all national roads that hadn't been given special value in the Norwegian national protection plan for roads, bridges and road-related cultural heritage objects (Nasjonal verneplan for veger, bruer og vegrelaterte kulturminner) received asphalt covering. Norwegian National Road 716 (usually labelled ''Rv 716'', ''Rv'' is the official abbreviation for ''Riksvei/Riksveg'') between Bergli and Valen in Frøya, Sør-Trøndelag was the last regular stretch of national road with a gravel coating. The last two remaining kilometeres were asphalted on December 17, 2003 with participation by among others Minister of Transport and Communications Torild Skogsholm. Norwegian national roads that are being maintained as gravel roads according to the protection plan are road 252 (Tyin–Eidsbugarden), road 258 (Grotli-Ospeli bru) and road 886 (Bjørnstad–Jacobselv). All these roads have after the reform been converted to county roads. The national roads are divided into two categories: European routes and other national roads. The route signs for the European routes have an "E" preceding the national road number and the sign is green with white script. Other national roads are also designated using green signs. The organization of national, county and village roads (later municipal roads) was introduced in 1931. Starting in 1912 the roads had been divided into main roads ("hovedveier") and village roads ("bygdeveier"). ==Extreme records of Norwegian national roads== 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「Norwegian national road」の詳細全文を読む スポンサード リンク
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