北京地铁18号线、17号线中段、6号线南延今天起试运营

Core Points - Starting from December 27, three new urban rail transit lines in Beijing will commence trial operations, adding approximately 30 kilometers to the operational network [1] - The total operational mileage of Beijing's urban rail transit will reach 909 kilometers with the addition of these new lines [1] Summary by Category New Line Openings - The new lines include the middle section of Line 17 (Gongren Tiyuchang to Shilihe), Line 18 (Malianwa to Tiantongyuan East), and the southern extension of Line 6 (Lucheng to Luyang) [1] Operational Impact - The addition of these lines is expected to enhance connectivity within the city and improve public transportation options for residents [1]