今天，开通仅两天的北京地铁18号线迎来首个早高峰通勤考验。早上8时左右，地铁18号线天通苑东站 站厅内，人流量不算大，处处透着新鲜劲儿：不少乘客举着手机拍照，有人对着站台门上的综合信息屏 研究列车到站时间和拥挤度，还有人一边走一边确认导航。17号线中段开通后，早高峰期间永安里站17 号线与1号线换乘量达1.1万人次，方便了通勤人员出行。 现场1 "第一次坐就挺好找路" 作为北京地铁路网里的"新成员"，18号线全长约19.8公里，设11座车站，串联起天通苑、回龙观两大居 住区，并直达中关村软件园腹地，被不少通勤族视为13号线西段的"分流线"。 列车从天通苑东站发车后，沿线陆续有乘客上车。8时30分左右，车厢逐渐坐满，在天通苑站出现了首 个明显的上下车交会点——这里可换乘5号线。再往西行，东北旺、上地软件园等站点，出现下车高 峰。北京地铁官方平台显示，今天8时至10时，18号线整体拥挤度保持在绿色"舒适"等级，与记者现场 感受一致。 线路的潮汐特征在早高峰尤为明显。上地软件园站、东北旺站作为靠近互联网"大厂"的站点，早高峰出 站客流集中，不少乘客直奔网易、新浪、腾讯等企业；而龙泽西、回龙观西大街等社区周边站点，则 ...

Core Points - By the end of 2024, Beijing will have 29 operational subway lines, totaling 879 kilometers in length and featuring 522 stations, including 98 transfer stations [1] - The first subway line, Line 1, was opened on October 1, 1969, and the network has expanded significantly over the past 55 years [1][2] - The 3rd and 12th subway lines are set to open on December 15, 2024, marking the addition of the 28th and 29th lines to the network [1][30][31] - The 18th line, a result of the expansion of Line 13, is expected to open by the end of this year, bringing the total to 30 lines [1] Summary by Line - **Line 1**: Opened on October 1, 1969, initially not open to the public until January 15, 1971, and officially operational on September 15, 1981 [2] - **Line 2**: Opened on September 20, 1984, as the first circular subway line in China [3] - **Line 13**: Opened its western section on September 28, 2002, and the eastern section on January 28, 2003 [4] - **Line 5**: Fully operational since October 7, 2007, serving as a major north-south transit line [6] - **Line 10**: Opened on July 19, 2008, and is currently the busiest line in the system [7] - **Capital Airport Line**: Opened on July 19, 2008, connecting the city to the international airport [9] - **Line 8**: Opened to the public on October 9, 2008, after initially serving the Olympics [10] - **Line 4**: Opened on September 28, 2009, and is operated by the MTR Corporation [11] - **Daxing Line**: Opened on December 30, 2010, and connects with Line 4 [12] - **Yizhuang Line**: Opened on December 30, 2010, with further extensions in subsequent years [13] - **Fangshan Line**: Opened its first section on December 30, 2010, with additional sections opened in later years [14] - **Changping Line**: Opened on December 30, 2010, and has seen multiple extensions since [15] - **Line 15**: Opened its first section on December 30, 2010, with further expansions in 2011 and 2014 [16] - **Line 9**: Opened its southern section on December 31, 2011, with further extensions in subsequent years [17] - **Line 6**: Opened on December 30, 2012, with additional sections opened in 2014 and 2018 [18] - **Line 14**: Opened its western section on May 5, 2013, with further expansions in the following years [19] - **Line 7**: Opened on December 28, 2014, and has been extended to serve new areas [20] - **Line 16**: Opened its northern section on December 31, 2016, with ongoing expansions planned [21] - **Xijiao Line**: Opened on December 30, 2017, connecting various parks and attractions [22] - **S1 Line**: Opened its first section on December 30, 2017, and completed the remaining section in 2021 [23] - **Yanqing Line**: Opened on December 30, 2017, as the first fully automated subway line in China [24] - **Daxing Airport Line**: Opened on September 26, 2019, serving the new airport [25] - **Yizhuang T1 Line**: Opened on December 31, 2020, with separate ticketing [26] - **Line 17**: Opened its southern section on December 31, 2021, with plans for full connectivity by 2025 [27] - **Line 19**: Opened its first section on December 31, 2021, with additional stations opened in July 2022 [28] - **Line 11**: Opened its western section on December 31, 2021, with further sections planned for December 2023 [29] - **Line 3**: Scheduled to open on December 15, 2024, completing its first phase [30] - **Line 12**: Also set to open on December 15, 2024, primarily running along the North Third Ring Road [31]