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过去一些年,关于干线铁路电气化的问题在美国引起了新的注意。目前美国电气化铁路长度不到全部路网总长的1％,而在苏联是27％,在日本为46％,在瑞士为99％,在大多数欧州国家为25～60％。实际上,在全世界大约占路网总长的10％,也就是说大约85000哩的铁路是电力牵引的,并且以大约每年3000哩的速度增加着。美国路网总长约在世界路网
In the past few years, the issue of electrification of the trunk railway has drawn new attention in the United States. At present, the electrified railway in the United States is less than 1% of the total length of the road network, compared with 27% in the Soviet Union, 46% in Japan, 99% in Switzerland and 25-60% in most European countries. In fact, about 10% of the total road network in the world, that is to say about 85,000 miles of railroads, is electrically powered and increases at a rate of about 3,000 miles per year. The total length of the U.S. road network is about the world’s road network