VISSIM-based Simulation Analysis on Road Network of CBD in Beijing, China

Beijing CBD area project involves the evaluation of roadway network. Due to the importance of this project and its special geographical location, it is necessary to analyze the traffic influence in future years. VISSIM is a traffic microscopic simulation software which has been widely used assessing traffic conditions. It is especially useful to evaluate different traffic management scenarios to choose the best alternative and optimization measures before implementation. This paper builds a road network model in VISSIM. Four different traffic organization plans are compared. Since the driving behaviors in Beijing are significantly different from USA or Europe, behavioral studies are conducted to calibrate parameters before model build-up in order to get more accurate results. This paper uses travel time, travel speed, queue length and delay as evaluation indicators to conduct the comparison. The results show that the one-way street organization plan inside CBD area performs the best.