Core Viewpoint - The new trains for Lines 4, 6, and 8 in Jinan have commenced trial operations, showcasing advanced technology and design features aimed at enhancing passenger experience and operational efficiency [1]. Train Specifications - The trains are composed of 6-car A-type sets, measuring 140 meters in length and approximately 3 meters in width, with a rated capacity of 1,860 passengers and a maximum capacity of about 2,590 passengers [5][6]. Design and Aesthetics - The trains feature a modern design with sharp angles, embodying a futuristic technological concept, and are themed with distinct colors: "Qingshan Green" for Line 4, "Quanzhi Blue" for Line 6, and "Kechuang Purple" for Line 8, reflecting the cultural essence of Jinan [8][11][14][17]. Interior Features - The interior design aligns with the train's theme colors, featuring familiar elements such as row seating and triangular handrails, with seat widths consistent with previous lines to accommodate northern body types [19][21]. Safety and Technology - The trains are equipped with seven core subsystems, including intelligent sensing modules and advanced "Eagle Eye" technology for real-time obstacle detection and autonomous braking, along with a three-tier collision energy absorption structure for enhanced safety during automated operations [24]. Operational Status - Currently, the eastern sections of Lines 4, 6, and 8 are in the empty trial operation phase, undergoing system debugging, operational drills, and safety assessments to ensure high standards for opening by the end of the year [26].