Core Viewpoint - The article highlights the innovative "ground heating" snow melting system implemented on the Ma-Zhao section of the Le-Xi Expressway, which is designed to enhance road safety and efficiency during winter conditions, particularly during the busy Spring Festival travel period [1][4]. Group 1: Technology and Innovation - The Ma-Zhao section is the first expressway in the province to adopt a large-scale ground heating snow melting system, featuring a closed-loop system that includes sensors, decision-making, and execution components [1][2]. - The system utilizes heat pipes buried 15 centimeters below the road surface, which are heated to 50-60 degrees Celsius to maintain road temperatures between 1-2 degrees Celsius, effectively melting snow [2][3]. - The snow melting system can melt 20 centimeters of snow in 5 hours at -10 degrees Celsius, demonstrating high efficiency even in extreme weather conditions [3]. Group 2: Performance and Efficiency - The system's energy consumption is notably low, with an estimated usage of only 0.06 kilowatt-hours per square meter per hour, which is 65% more energy-efficient than traditional electric heating methods [3]. - The heat pipes have a lifespan of 30 years and can withstand up to 50 million truck passes without affecting road integrity, ensuring long-term operational reliability [3]. Group 3: Operational Strategy - The expressway is equipped with multi-functional snow removal vehicles and has established a four-tier emergency response plan for varying snow conditions, ensuring continuous monitoring and maintenance during the Spring Festival [4]. - As of February 8, the average traffic flow on the Ma-Zhao section exceeded 3,000 vehicles, indicating the system's importance in managing high traffic volumes during adverse weather [4].

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]