A Bus Transport Network Model Based On Directed Random Walk

On the basis of the analysis of the statistical data of bus transport networks of three major cities in China, we propose a novel evolution model of the bus transport network, which applies the strategy of random walk based on direction constrain matrix on two-dimensional grid and the mechanism of combining the geographical-close stations. We investigate some static properties, which include the topological structure and the spatial characteristics covering the neighboured road sections directions and the road section length distribution, and study the dynamic characteristic of the network traffic flow distribution analysed by the method of minimum spanning tree. The simulation results show that the statistical features of the model agree well with that of the actual networks. Key-Words: bus transport network model, directed random walk, combining the geographical-close stations, direction constrain matrix