如今，在世界各国的人城市里，交通堵塞和环境污染已成为困扰城市发展的严重问题，何去何从，现实正向人们提出严峻的挑战：在西欧任何一个大城市里，当你在营运高峰驾车驶向城里，一定会遇上交通堵塞，处于进退两难的尴尬。于是，越来越多的人迁到城外的边缘地区，但这并未使 Nowadays, traffic congestion and environmental pollution in urban and rural areas of the world have become serious problems that plague the development of cities. The reality is posed a serious challenge to people. In any large Western European city, when you drive at the peak of operation To the city, we will encounter traffic jams, in a dilemma of embarrassment. As a result, more and more people moved to the outskirts of the city, but this did not