8月15日至17日，北京天安门地区及相关道路分时、分段采取临时交通管理措施

Core Points - The article outlines temporary traffic management measures in Beijing for a special event, detailing specific road closures and restrictions for vehicles and pedestrians [3][4][5][6][7]. Group 1: Traffic Management Measures - From August 15, 22:00 until the end of the event, certain roads around Tiananmen Square will be closed to all vehicles and pedestrians except those with special event permits [3]. - On August 16, from 3:00 until the end of the event, specific roads in the Changping South area will also be restricted to vehicles with special permits [4]. - Additional restrictions will be in place on August 16, from 15:00 until the end of the event, in areas including the north of Jinshui Bridge and south of the Forbidden City, prohibiting access to unauthorized vehicles and pedestrians [4][5]. Group 2: Specific Time Restrictions - On August 16, from 16:00 until the end of the event, Chang'an Avenue will prohibit passenger loading and unloading for motor vehicles and restrict non-motorized traffic [4]. - Various other roads will have restrictions on August 16, including West Dawang Road and Guanghua Road, with similar prohibitions for unauthorized vehicles and pedestrians [5][6]. - On August 17, from 0:30 until the end of the event, additional roads including Fuxingmen Outer Street will also be closed to unauthorized vehicles and pedestrians [6][7]. Group 3: Public Advisory - The public is advised to plan their travel routes and times in advance, and to comply with the traffic management measures in place during the event [7][8].