北京3条（段）地铁新线试运营 轨道交通总里程突破900公里

Core Viewpoint - The opening of three new subway lines in Beijing enhances public transportation options for large residential areas, contributing to the overall expansion of the city's rail network, which now exceeds 900 kilometers in total operational length [1]. Group 1: New Subway Lines - Three new subway lines, including the 18th line, the mid-section of the 17th line, and the southern extension of the 6th line, have commenced trial operations [1]. - These new lines provide improved public transport accessibility to major residential areas such as Huoying, Panjiayuan, and Yizhuang [1]. Group 2: Infrastructure Highlights - The 18th line features the first column-free station in Beijing, with a hall span of 18 meters, creating an open and spacious transfer environment [3][6][7]. - The 17th line's Panjiayuan West Station incorporates cultural elements like blue-and-white porcelain and antiques, showcasing a blend of culture, technology, and art [5]. - The East Daqiao Station on the 17th line is designed with the theme "Fengming Dongfang," merging traditional cultural elements with modern artistic expressions [6].