摘要
针对排队车辆在一个绿灯相位内不能完全消散的情况,建立了过饱和状态下道
路单交叉口的延误模型。随着物联网技术及数据采集与处理精度的提高,可主
要分析测量断面车辆到达率和离开率的相关规律,经机理分析,分别对单相位
路口、两相位单交叉口和四相位单交叉口进行建模。采用所建立的过饱和交叉
口延误模型,可寻求最小延误重新分配各路口的绿灯时间,以缓解城市道路过
饱和的状况。仿真结果验证了所建模型的准确性。
关键词:w城市道路交叉口w;过饱和状态w;交通延误w;建模
Abstract
The oversaturated state of the intersection is mainly manifested as the
queuing vehicles are not completely dissipated at the end of a green light
phase.In order to cope with the traffic congestion,the mathematical
model of an intersection is built.The relative regularity of arrival rate and
departure rate of vehicles are analyzed.Through the analysis of the
mechanism,the modeling of single-phase intersection,two-phase single
intersection and four-phase single intersection are studied.The
established oversaturated intersection delay model can be used to
assign the green time of each intersection by calculating the minimum
delay to alleviate the oversaturation condition of the city road.Numerical
simulation results verify the validity and availability of the modeling
method.
Keywords : wurban traffic intersection;oversaturation;traffic
delay;modeling
1 引言
当今社会汽车持有量快速增加,市区道路车流量大幅增加,拥堵状况日益
严峻
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