过饱和信号交叉口时空资源动态优化策略研究

Research on Time-space Resource Dynamic Optimization Strategy at Supersaturated Signalized Intersection

首先本文在前人研究的基础上,进一步明确了交叉口时空资源的种类及其特性,并对时空资源的辩证关系进行研究。然后本文在对实时检测数据分析的基础上,制定了信号交叉口过饱和时空资源动态优化策略。最后本文运用微观仿真软件VISSIM对左转车流过饱和实施时空优化策略前后的交叉口通行情况进行仿真。仿真结果显示该时空优化策略能够充分利用交叉口内时空资源,提高车流通行能力,降低车流饱和度,从而有效的预防和缓解交叉口拥堵。

Firstly, this paper further cleared the kinds and characteristics of the time-space resources at intersection and researched the dialectical relationship of time resources and space resources on the basis of predecessors＇ research. Secondly, this paper formulated dynamic time-space resources optimization strategy for supersaturated signalized intersection on the basis of the analysis of the real-time detection data. Finally, this paper selected the left traffic supersaturated as the object, then used the microscopic simulation software VISSIM to simulate the left traffic conditions before and after the implementation of time-space optimization strategy. The simulation results show that the time-space optimization strategy can make full use of the time resources and space resources at intersection, improve traffics capacity, reduce traffic saturation, effectively prevent and relieve the intersection congestion.