“车开到哪儿，就污染到哪儿”

Core Viewpoint - The article highlights the issue of illegal modifications in heavy-duty trucks, specifically the installation of a "urea adjustment screw" that significantly increases emissions, turning these vehicles into major sources of pollution [6][9][10]. Group 1: Illegal Modifications and Their Impact - The installation of a small screw on the exhaust temperature sensor can prevent the proper functioning of the urea injection system, leading to a substantial increase in nitrogen oxide emissions [6][9]. - Heavy-duty trucks, when modified in this way, can emit pollution equivalent to that of dozens of compliant trucks, exacerbating air quality issues [9]. - The article notes that nitrogen oxide emissions from heavy-duty trucks account for 80% of the total nitrogen oxide emissions from motor vehicles in China [9]. Group 2: Enforcement and Regulatory Measures - Enforcement efforts have intensified, with a reduction in the number of modified trucks detected during inspections, indicating some success in curbing illegal modifications [8][10]. - Various provinces, including Beijing, Shandong, and Henan, have reported cases of illegal modifications, highlighting the widespread nature of the issue [8][9]. - The article emphasizes the need for a coordinated approach among environmental, transportation, and law enforcement agencies to effectively combat illegal modifications [14]. Group 3: Economic Incentives for Modification - Truck drivers are motivated to modify their vehicles due to the high costs associated with urea consumption, which can amount to approximately 10,000 yuan annually [11]. - The availability of online tutorials and low-cost modification kits further encourages illegal practices among truck drivers [11][12]. - The article mentions that a specific "urea adjustment screw" can be purchased online for as little as 12 yuan, making it an accessible option for many drivers [12]. Group 4: Future Directions and Recommendations - The article suggests that promoting the adoption of new energy heavy-duty trucks could be a viable solution, as the cost gap between these and diesel trucks is narrowing [14]. - It calls for the establishment of a comprehensive information-sharing platform among regulatory bodies to enhance monitoring and enforcement efforts [14]. - The need for stricter regulations on online sales of illegal modification components is also highlighted, urging platforms to take responsibility in preventing such transactions [13][14].