一、我国交通运输现状为适应社会经济发展,消除交通运输对国民经济的“瓶颈”制约,改革开放以来,交通基础设施建设逐年加强,数量不断增加。到2003年底,综合运输线路总里程达378.89万公里;铁路营业里程7.3万公里,其中,复线里程2.5万公里,电气化里程1.9万公里,提速线路1.3万公里; First, the status quo of China’s transportation In order to adapt to the social and economic development, to eliminate the “bottleneck” constraints of transport on the national economy, since the reform and opening up, traffic infrastructure has been strengthened year by year, increasing in number. By the end of 2003, the total length of integrated transport routes had reached 3,788,900 kilometers; the mileage of railways was 73,000 kilometers, of which 25,000 kilometers were double-track lines, 19,000 kilometers were electrified and 13,000 kilometers were speed-raised lines;