本文作者： 21ST
China has classified main roads into expressways (高速公路), and first-grade, second-grade, third-grade and forth-grade highways (一级、二级、三级、四级公路) according to their traffic volume and function. According to data collected by Anbound, 95 percent of China’s expressways, 61 percent of first-grade highways and 42 percent of second-grade highways are toll roads. China has 100,000km of toll roads, accounting for more than 70 percent of the world’s total of 140,000km.