一、铁路里程及建设动向随着汽车的普及和航空事业的发展,在陆地运输中起主要作用的铁路,除部分地区外,运量比重全面下降。现在只有中国、苏联等尚在积极修建新线(每年各约1000km),其他资本主义国家,除大都市的地铁、部分新干线及由内陆矿山到沿海港口的专用铁道尚在修建外,几乎不再建设新线。至于封闭不经济的空闲线路则都在进行。 I. Railway Mileage and Construction Trends With the popularization of automobiles and the development of aviation undertakings, the railways that play a major role in land transport have all but declined in some areas. At present, only China, the Soviet Union and others are still actively constructing new lines (about 1,000km each year). Other capitalist countries, except the metro in the metropolis, part of the Shinkansen and the special railways from inland mines to coastal ports, are still under construction. Almost No longer building new lines. As for the closed economy of free lines are in progress.