多地地铁新线年底集中开通 京沪城轨双双突破900公里

Group 1 - The core viewpoint of the articles highlights the significant expansion of urban metro systems across various Chinese cities, with nearly 20 new metro lines expected to be operational by December 2025 [1][2][3] - Beijing is set to open three new metro lines by December 24, 2025, adding 30 kilometers to its total operational length, which will reach 909 kilometers across 30 lines [1] - Shanghai's metro system will also expand with the opening of the second phase of Line 18 on December 27, 2025, bringing its total operational length to 906 kilometers across 21 lines [1] Group 2 - Other cities such as Jinan, Shenzhen, Guangzhou, Xi'an, Chengdu, Nanjing, and Hefei are also planning to open new metro lines by the end of December 2025, contributing to the overall growth of urban rail transit in China [2] - The concentration of new line openings at the end of the year is attributed to the need for adequate preparation and testing time, as well as the anticipation of increased passenger traffic during the New Year and Spring Festival holidays [2] - As of November 2025, a total of 334 urban rail transit lines are operational across 54 cities in China, with a combined length of 11,389.7 kilometers and a passenger volume of 2.83 billion trips [3]