Evolution Properties of Beijing Urban Rail Transit Network

As an effective method to alleviate the traffic congestion, urban rail transit system has been extensively studied recently in which the structural properties are the most important aspect to understand the functions of urban rail transit system. Here, from the dynamic viewpoint, five measure characteristics of the complexities of Beijing urban rail transit network (BURTN) and the evolution properties are studied in this paper. According to the statistical results, we give the reasons of crowded passengers observed every day from the topology perspective. These results may induce to nice advice for the plan of BURTN in the future.