Kilometres railway lines by region

Annual evolution of the number of kilometres of railway lines per region. A line is a railway infrastructure that contains one or two tracks, which connects two particular places and to which a number is assigned.

各地区铁路线路长度年度演变情况。线路是指包含一条或两条轨道的铁路基础设施，用于连接特定地点，并为每条线路分配一个编号。