随着城市的发展与现代化建设，噪声污染日趋严重，已成为城市居民反映最多的一个环境问题。其中交通噪声对人干扰最大，影响面最广且难以解决。对于北京这样一个以旧城（二环路以内地区）为中心，边建设边改造起来的城市，道路交通噪声污染的控制一直是环境噪声防治方面的重要? With the development and modernization of the city, noise pollution is becoming more and more serious, and it has become one of the most reflected environmental problems among urban residents. Among them, traffic noise has the largest interference to people, the most extensive and difficult to solve. For such an old city in Beijing (within the Second Ring Road) as the center, while building a side-rebuilt city, the control of road traffic noise pollution has always been an important aspect of environmental noise prevention and control?