An Application Of EPs-based Complex Network Analysis In Urban Traffic Network

The Urban Traffic Network(UT-Net) research is a fundmental issue in the study of spatio-temporal evolution on the urban traffic flow, and also provides a powerful tool for transportation planning and traffic control. Traditional method based on network optimization with balance restriction is facing the difficulties of the dimension and complexity. Recently, the Complex Network research and relative analytic tools throw light on the structure and inner properties study on huge complex nature and manmade system.This article first reviews the traditional methods on UT-Net and some issues on Complex Network. Then a traffic simulation software we developed is introduced, which can.analyze the compex network properties of urban traffic network, and we model the Hang Zhou's UT-Net as an example by it. As the result, we found the urban traffic network owns the small-world property and the degree of nodes obeys the power-law distribution. After that, we explore the similarity between urban traffic networks and cellular metabolic networks (C-Nets). Based on the similarity, we propose a reaction model of traffic volumn, and use a powerful tool: Extreme Pathways Analysis (EPs), a kind of the network-based pathways analysis method, on urban traffic flow analysis. The EPs is not only used to analysis the state of current systems, but also used to predict the results of possible change. At last, we analyze a part of Hang Zhou urban road network by using the EPs method.