论文部分内容阅读
改革开放10年来,我国的公路建设特别是高等级公路建设发展很快。1979年至1989年的10年间,新增公路13.85万km,公路总里程已达到百余万公里。同时,建成了一批高速公路、一级公路和二级公路。高级与次高级公路里程已增至数十万km。但是仍然不能适应国民经济发展的需要。突出的问题是,公路少、标准低、路况差。而美国的公路里程总数已达到662万km,高速公路68425km。
In the past 10 years of reform and opening up, China’s road construction, especially the construction of high-grade highways, has developed rapidly. During the 10 years between 1979 and 1989, the number of newly added highways was 138,500 km, and the total length of highways has reached more than one million kilometers. At the same time, a number of expressways, first-class highways and second-class highways have been built. Advanced and sub-highway mileage has increased to several hundred thousand kilometers. However, it still cannot meet the needs of the development of the national economy. The outstanding problem is that there are few roads, low standards, and poor road conditions. The total number of highways in the United States has reached 6.62 million km and expressways 68425 km.