（新春见闻）成都地铁年度检修保障春运线路运行安全

Core Viewpoint - Chengdu Metro's signal maintenance personnel are conducting annual switch inspections on Line 27 at Wangjia Bridge Station to ensure efficient and safe operation during the Spring Festival travel period [2][3][5][6][8][9][11][12][14] Group 1: Maintenance Activities - The maintenance team is focusing on checking and verifying switch conversion, locking, and signal interlocking functions [2][3][5][6][8][9] - Maintenance activities include measuring track gauge and cleaning dust from equipment [6][12] Group 2: Operational Assurance - The inspections are aimed at ensuring the high efficiency and safety of the metro line during the busy Spring Festival travel season [2][3][5][6][8][9][14] - The maintenance work is being carried out after the metro trains have stopped operating to minimize disruption [8][9]