由于国民经济的迅猛发展,我国现已进入小康社会,向中等发达国家生活水平迈进,生活消费结构升级换代,住房、汽车等已经成为消费的热点。公共交通是否舒适、畅通无阻成为现在人们关心的重点问题,为了满足现代社会人们出行对普通公路的要求,公路建设等级在提高,高级、次高级沥青混凝土路 Due to the rapid development of the national economy, our country has now entered a well-to-do society, marched to the standard of living of the moderately-developed countries, and the consumption structure in the country has been upgraded. Housing and automobiles have become hot spots for consumption. Public transport is comfortable and unimpeded become the focus of people’s concern now, in order to meet the modern society of people traveling on the requirements of the general highways, highway construction level is rising, advanced, sub-senior asphalt concrete road