打响西部第一枪！四川这两条高速免费了，全国高速免费时代要来了？

Core Points - Sichuan has initiated a significant move by making the Chengmian Expressway and Chengbei Exit Expressway toll-free, marking a notable shift towards free highways in the western region of China [1][5][12] - The decision to eliminate tolls is attributed to the expiration of the toll collection period, as highways in China have a maximum operational toll period of 30 years for commercial roads and 20 years for government-funded roads [5][8] - The move has been positively received by local drivers, with many expressing their excitement over the newfound savings on tolls [3][10] Summary by Sections - Importance of the Highways: Chengmian Expressway serves as a vital route connecting Chengdu to Mianyang, heavily utilized by both commercial and personal vehicles, while the Chengbei Exit Expressway is crucial for residents commuting to the city or traveling towards Shaanxi [3][5] - Financial Implications: The financial sustainability of toll-free highways varies across regions; while some expressways in economically prosperous areas generate substantial revenue, many in the central and western regions operate at a loss and rely on government subsidies [7][8] - Future of Highway Tolling: The trend towards free highways is seen as a necessary evolution, with the expectation that more cities will follow Sichuan's lead. However, the transition will require careful financial planning to ensure that maintenance and operational costs are covered [10][12]