《纲要建议》（2021—2025）共分八章，包括：总体要求、多层次融合规划、勘测技术、土建技术、车辆及工艺、机电设备、运营与维保、综合专项技术。其中综合专项技术一章包括TOD综合开发、数字城轨、RAMS、安全韧性、振动噪声综合控制。
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