Chinese urbanization 2011 is a historical moment in Chinese urbanization's progress,the urban population surpass the rural population for the first time.In the next 20 years,estimate about 3.5 billion's rural population will remove to city.such scale's city's development to urban traffic are both a challenge and opportunity.Chinese government advocate the development ideal of "people foremost" all the time,enhancing people going out by bus rather than car.and the ideal also call upon construct the society of "energy conversation and environment friendly".when the specific aim were exist,Chinese city can have a great blueprint in their development,and turn the most investment to security,clean and economical traffic system's development.