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为了促进国民经济的迅速发展,除修建必要的新线外,对既有主要干线必须大力加强,以提高其通过能力及输送能力。提高铁路能力的基本措施不外乎是增加列车的重量、速度及密度。但如何才能经济有效,则是我们应着重研究的课题。兹就我国既有铁路主要干线的技术条件及运量要求,略论其列车重量、速度及密度的发展问题。
In order to promote the rapid development of the national economy, apart from the construction of the necessary new lines, the major existing trunk lines must be greatly strengthened so as to enhance their capacity of passage and delivery. The basic measure to improve railway capacity is nothing more than increasing the weight, speed and density of trains. But how to be economically effective is the subject that we should focus on. On the technical conditions and traffic requirements of the existing main railways in our country, we will briefly discuss the development of the weight, speed and density of trains.