This article present the concept of Urban TrafficIndex and Travel Index, discuss the mathematic model about the Urban TrafficIndex and Travel Index.
提出城市交通综合指数和交通出行指数的概念，并探讨了具体计算指数的数学建模。
2
At present, the research about the comprehensive evaluation of domestic urban transport system is still in its initial stage, the research about trafficindex is less.
目前，国内对于城市交通系统的综合评价的研究还处于初级阶段，交通指数方面的研究更少。
3
Therefore, this paper puts emphasis on the research about the theory and compute methods of trafficindex. We try to use transport index to evaluate the development of the urban transport system.