过饱和状态下道路单交叉口的延误模型建立

doi:10.11959/j.issn.2096-3750.2017.00030

Abstract

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.

Key words: urban traffic intersection, oversaturation, traffic delay, modeling

CLC Number:

TP273

Fu-yang CHEN,Xiao-yue YAN,Bin JIANG. Research on the delay model of single intersection in the oversaturated state[J]. Chinese Journal on Internet of Things, 2017, 1(3): 40-46.

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References 20

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	方向		车道数/条	单车道宽度/m	交通流量/(vechile·h^?1)	交通流量合计/( vechile ·h^?1)
		左转	1	3.5	200
东	进口	直行	1	3.5	800	1 000
		右转	0	3.5	0
	出口		2	3.5	—	—
		左转	1	3.5	250
南	进口	直行	1	3.5	800	1 050
		右转	0	3.5	0
	出口		2	3.5	—	—
		左转	1	3.5	120
西	进口	直行	1	3.5	1 155	1 275
		右转	0	3.5	0
	出口		2	3.5	—	—
		左转	1	3.5	180
北	进口	直行	1	3.5	600	780
		右转	0	3.5	0
	出口		2	3.5	—	—

编号	项目	相位1	相位2	相位3	相位4
1	周期/s	145	145	145	145
2	相位时长/s	55	20	50	20
3	绿灯时长/s	55	20	50	20

车流	仿真延误（车均）/s	模型计算延误（车均）/s	误差
东—西	29.4	26.53	9.76%
东—南	48.0	45.35	5.54%
西—东	24.5	23.83	2.73%
西—北	46.0	48.53	5.50%
南—北	23.3	24.24	4.03%
南—西	62.9	61.00	3.02%
北—南	25.3	23.90	5.53%
北—东	79.0	76.36	3.34%
全部	32.1	31.10	3.12%

Research on the delay model of single intersection in the oversaturated state

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