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1美国公路总体概况美国是高速公路发展最迅速,路网最发达,设施最完善的国家之一,其高速公路建设起步早。1940年美国的第一条高速公路位于西部的洛杉矶至帕萨迪纳的旱河谷中的旅游公路建成通车,全长6公里。经
1 Overview of the U.S. Highway The United States is one of the countries with the most rapid development of the expressway and the most developed road network with the most complete facilities. Its expressway construction started early. The first highway in the United States was opened to traffic in the dry valley in Los Angeles to Pasadena in the west in 1940, a total length of 6 km. through