截至2022年底，中国大陆地区共有55个城市开通城轨交通，运营线路超过10 000 km，达到10 291.95 km，其中，地铁线路8 012.85 km，占比77.85%。2022年当年共新增城轨交通运营城市5个，新增运营线路长度1 085.17 km，其中，新增地铁线路803.12 km。新增运营线路涉及4种系统制式，分布在25座城市，共50条(段)线路。

As of 2022, 55 cities in the Chinese mainland had operating urban railway lines of over 10,000 kilometers, and the operating length totaled 10,292 kilometers. Among them, the subway lines amounted to 8,013 kilometers, accounting for 77.85%. In 2022, five more cities developed urban railway lines. Altogether 50 new lines involving 4 types of systems were developed and put into operation in 25 cities in 2022, reaching 1,086 kilometers. The newly built subway lines in that year added up to 803 kilometers.

U231