再添85.1公里，64座车站！济南多制式轨道交通线将达248公里

Core Viewpoint - The opening of the new metro lines in Jinan significantly enhances the city's public transportation network, expanding the total operational length to 248 kilometers and increasing the number of stations to 64, thereby improving the overall influence of Jinan's rail transit system [1][8]. Group 1: Line Details - The newly opened Line 4 is the longest and has the most stations among the current lines, spanning 40.3 kilometers with 33 stations, connecting five administrative districts and serving as a major backbone for urban passenger flow [3]. - Line 8, measuring 25.3 kilometers with 14 stations, plays a crucial role in promoting the coordinated development of Zhangqiao District and Jinan's main urban area, enhancing urban spatial layout and improving citizens' travel quality [5]. - The 6th line's eastern section, along with Lines 4 and 8, primarily runs in an east-west direction, integrating with the existing "H"-shaped network of Lines 1, 2, and 3, allowing for seamless transfers without exiting the station [7]. Group 2: Construction Innovations - Line 8 features several national firsts, including the full application of "eternal integration" and "prefabricated assembly" technologies, which have led to a reduction of approximately 3,400 tons of carbon emissions and a cost saving of about 15 million yuan [5]. - The use of glass fiber reinforced concrete for station facades and the introduction of a "bare" train design that reduces weight by approximately 1.2 tons are notable innovations in the construction of Line 8 [5]. Group 3: Operational Efficiency - The new lines will operate from 6:00 AM to 10:30 PM for Line 4 and the eastern section of Line 6, and from 6:00 AM to 10:05 PM for Line 8, with the new lines allowing for convenient transfers to existing lines [8]. - The "Y"-shaped operation model of Lines 4 and 8 is designed to meet diverse passenger flow needs, with a peak interval of just 4 minutes and 30 seconds on shared segments, enhancing the overall transportation efficiency of the network [7].