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随着政治和经济的发展,联邦德国城市密集地区的铁路干线长约22 000km,其通过能力约占全路通过能力的80％。交通的发展,除要求有一个合理的路网布局外,还要求充分利用线路的通过能力。已将22.5t轴重的车辆投入使用,列车速度也持续提高。现在以160km/h和200km/h行驶的列车数量增加了,货物列车的速度由65～80km/h提高到90km/h。联邦德国联邦铁路工务部门为适应这一发展,在1970到1980年间采取了如下积极技术措施。
With the political and economic development, the railway trunk line in the densely populated urban area of the Federal Republic of Germany is about 22,000 km and its passing capacity accounts for about 80% of the total passing capacity. Traffic development, in addition to requiring a reasonable layout of the road network, also requires full use of the line capacity. 22.5t axle weight vehicles have been put into use, the train speed has continued to improve. Now that the number of trains traveling at 160km / h and 200km / h has increased, the speed of freight trains has been increased from 65 to 80km / h to 90km / h. To adapt to this development, the Federal Ministry of Railways of the Federal Republic of Germany adopted the following positive technical measures between 1970 and 1980.