城市轨交排名格局生变：成都广州破700公里，南京或超重庆杭州！

Core Viewpoint - The urban rail transit ranking is expected to change this year, with Chengdu's rail transit network set to exceed 700 kilometers due to multiple new line openings, enhancing connectivity and supporting economic development [1][3][4]. Summary by Sections Chengdu's Rail Transit Expansion - Chengdu's rail transit group announced the full launch of trial operations for several new lines, marking a significant step towards initial operations [1]. - The total operational mileage of Chengdu's rail transit is projected to surpass 700 kilometers this year, with the addition of four new lines totaling 87.5 kilometers [3][4]. Comparison with Other Cities - Other major cities like Guangzhou, Chongqing, and Nanjing are also set to open new lines, potentially altering the rankings in urban rail transit mileage [6][8]. - Guangzhou is expected to maintain its third position with a projected operational mileage of 700 kilometers after the opening of new lines [6]. Future Projections - The fifth phase of Chengdu's rail transit planning has been approved for 2024, with new lines expected to be announced soon [4]. - The number of cities with operational rail transit exceeding 500 kilometers will increase to nine, with Nanjing expected to surpass Chongqing in the rankings [6][8]. Competitive Landscape - The competition between cities like Xi'an and Zhengzhou is intensifying, with both cities aiming to improve their rankings through new line openings [8].