Core Viewpoint - The city of Changchun has implemented a comprehensive and efficient snow removal strategy, utilizing advanced technology and coordinated efforts among various departments to ensure public safety and maintain traffic flow during snowfall events [1][2][3][4][5] Group 1: Snow Removal Operations - Changchun has over 1,800 large snow removal vehicles and 15,000 sanitation workers ready to respond to snowfall, employing a phased approach to minimize traffic disruption [2] - The snow removal strategy prioritizes clearing outer ring roads and secondary streets during peak hours, with a full-scale operation on main roads after peak traffic [2] - The city has developed a "large machinery as the main force, with manual assistance" approach to enhance efficiency in snow removal operations [3] Group 2: Technological Integration - The city has integrated smart snow removal technologies, including four phased array radars for minute-level weather monitoring, which provide timely and accurate snow condition information [3] - A "progressive" meteorological service approach has been established, starting monitoring a week before snowfall and providing detailed forecasts as the event approaches [3] Group 3: Safety Measures - Various departments, including meteorological, sanitation, police, and transportation, have collaborated to create a robust safety net during snowfall, enhancing road patrols and communication [4][5] - A detailed emergency response plan has been developed, including a three-tiered emergency duty scheme and a dedicated communication platform for real-time updates among departments [5] - The transportation bureau has ensured that transport companies are informed of snowfall conditions, requiring vehicle checks and adjustments to transport plans as necessary [5]