Core Viewpoint - Shanghai Metro Line 9 is addressing overcrowding issues during peak hours by removing seats in certain carriages to increase standing capacity for passengers [1] Group 1: Operational Changes - The Shanghai Metro has initiated a pilot program on Line 9 to enhance passenger capacity by removing four rows of seats at the front and rear of specific carriages [1] - The removal of seats is accompanied by the installation of anti-slip mats on the floor where seats were removed, ensuring safety for standing passengers [1] - This adjustment is expected to increase the standing capacity by approximately 25 additional passengers per carriage [1]