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我国现有国道70条,总长10.6万公里,以国道为骨架,辅以地方干线公路(省道)和普通公路,形成了全国公路网。 国道,是在国家公路网中具有全国性政治、经济意义的国家干线公路的简称。目前,这70条国道根据其地理走向分为三类:一类是以首都北京为中心,作扇面辐射的公路,共12条,约1.4万公里;第二类是中国版图之内南北走向的公路,共28条,约3.9万公里;第三类是东西走向的公路,共30条,约5.3万多公
China’s existing 70 State Roads, with a total length of 106,000 kilometers, with the national road as the skeleton, supplemented by the local trunk highway (provincial highway) and the general highway, formed the national road network. The national highway is short for national trunk highway with national political and economic significance in the national highway network. At present, the 70 national highways are divided into three categories according to their geographical orientation: one is a highway with fan-shaped radiation centering on the capital Beijing, a total of 12, about 14,000 km; the second is the north-south direction within the territory of China Highway, a total of 28, about 39,000 km; the third category is east-west road, a total of 30, about 53,000 more than the public