济南轨道交通4号线、8号线空载试运行启动

Group 1 - The core point of the article is the commencement of the empty test operation for Jinan Metro Line 4 and Line 8, marking a critical phase in the preparation for their operational launch by the end of the year, which will significantly enhance the transportation structure in Jinan [1] Group 2 - Line 4 spans 40.3 kilometers with 33 underground stations, covering 80% of the passenger flow in densely populated areas along Jinan's Jing10 Road, and will connect with multiple existing metro lines and the high-tech eastern district [3] - Line 8 covers 25.3 kilometers with 3 underground and 11 above-ground stations, linking key areas such as the China (Shandong) Pilot Free Trade Zone and various educational and technological institutions, facilitating travel for residents and promoting coordinated development [3] Group 3 - The empty test operation is a crucial transition from construction to operational phase, involving a three-month period of simulating real operational conditions and testing core systems such as vehicles, tracks, signals, and power supply [4] Group 4 - The construction of Lines 4 and 8 emphasizes the integration of technology and green low-carbon practices, with Line 4 overcoming complex geological conditions and Line 8 aiming to be a national model for green urban rail transit [5] - The underground stations on Line 8 utilize advanced green construction techniques, achieving a reduction of approximately 3,400 tons of CO2 emissions per station, while the Shandong University station is designed for solar energy generation, expected to produce 180,000 kilowatt-hours annually [5] - During the empty test operation, Jinan Metro Group will conduct system debugging, operational drills, and safety assessments to ensure high standards for the lines' opening, contributing to the modernization of the province [5]