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中国城市的超常增长已经为世人熟知。如今,中国已经有160座城市的居民超过百万,总人口的一半以上居住在城市,这个增长速度是西方城市的两到三倍。这种空前的人口移动带来了巨大的压力,其中感受最明显的部门之一就是交通。中国汽车数量以每年超过10%的速度增加,因此,城市规划者和交通管理部门必须有创新性的技术才能解决道路拥堵。尽管北京等城市都已经建立了好几个专门播报最新路况信息的广播电台,但仍然无法防止拥堵的出现,如
The extraordinary growth in Chinese cities is already well known to the world. Today, China has 160 cities with more than a million inhabitants and more than half of the population living in cities, growing at a rate two to three times that of western cities. This unprecedented population movement has brought tremendous pressure, and one of the most visible sectors is traffic. As the number of cars in China increases at more than 10% a year, urban planners and traffic management agencies must have innovative technologies to solve road congestion. Although Beijing and other cities have already set up several radio stations that broadcast the latest traffic information, they still can not prevent congestion. For example,