VISSIM Simulation Based Expressway Exit Control Modes Research

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In order to investigate the urban expressway off-ramp control problems, the traffic simulation software VISSIM is adopted. According to the traffic characteristics of the expressway off-ramp, the parameters of traffic model are determined. Furthermore, this paper uses dichotomy and control variables to obtain the thresholds as vehicles start queuing in off-ramp, and draws comprehensive zoning map based on the traffic flow on the side roads and the main road. By selecting delay of main and side road as accessing indices, traffic control mode of the Shoushan entrance and exit of South Second Ring Expressway in Fuzhou was investigated. On account of the different stages of the comprehensive zoning map, the following simulation experiments are conducted: the main roads' vehicles have priority, simulation of induction control of off-ramp, present situation simulation. The optimal control method was determined according to the result of the simulation study.




Zhu, Z., Chen, S., Yang, Y., Hu, A., & Zheng, X. (2016). VISSIM Simulation Based Expressway Exit Control Modes Research. In Procedia Engineering (Vol. 137, pp. 738–746). Elsevier Ltd.

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