三大类交通设施相继启用，北京交通“岁末上新”交出亮眼答卷

Group 1 - The core viewpoint of the news is the significant expansion and enhancement of Beijing's transportation infrastructure, particularly with the opening of new subway lines and the Beijing Tongzhou Station, which marks a new phase in the city's transportation network [1][3][5] - The Beijing Tongzhou Station will officially open on December 30, 2023, serving as a key hub in the city's transportation system, integrating various modes of transport including intercity rail, subway, and buses [3][5] - The new subway lines, including the 17th and 18th lines, and the southern extension of Line 6, have commenced operations, providing improved connectivity and efficiency for commuters in Beijing [7][8] Group 2 - The new infrastructure projects, such as the Beijing-Mi Expressway's new National Exhibition section and the Yuantong Bridge interchange, have been completed, significantly enhancing traffic capacity and reducing travel times in the region [9][10] - The Beijing-Mi Expressway's new section has increased its capacity from four lanes to twelve lanes, allowing for faster access to major ring roads and alleviating traffic congestion [9] - The Yuantong Bridge's new southbound west ramp will improve connectivity between major routes, reducing detour distances and travel times, thereby supporting regional economic development [10]