关键词: 改进VDR模型, 虚拟车间距, 跟驰约束, 绿波, 瓶颈隧道

Abstract: In this paper, an improved Green Wave cellular automata model of velocity-dependent-randomization is proposed, which supplies the notion of virtual space headway and constraints on the following car under certain conditions on considering the impact of the vehicle in front on the highway. The simulation of the common tunnel of the bottleneck is carried out with it. The relationship of average speed, density and traffic volume is analyzed by the computer simulation, getting off the affecting pattern of some factors such as random slow probability and density on traffic flow. The simulation results show that the improved VDR green wave model not only has the typical characteristics of the basic slow start model, but it also has significant improvements to the situation of numerical simulation results slants little of traditional VDR cellular automaton model. And it provides references for the scientific management of traffic flow of bottlenecks.

Key words: improved VDR model, virtual space headway, vehicle-following constraints, green wave, tunnel of bottleneck