面向网联汽车环境的单点全感应式信号配时技术

doi:10.13229/j.cnki.jdxbgxb20210067

Abstract

Abstract:

To generate more green termination decisions that are appropriate， a fully-actuated signal timing technique for isolated signalized intersections in an environment with 100% penetration rate of connected vehicles is proposed. The concepts of green termination decision zone and vehicle extended length are defined. The lengths and number of approach lanes as well as the number， position， physical length， and speed of connected vehicles in green termination decision zone are comprehensively considered to calculate the conversion rate of vehicle extended length. On this basis， the demand of current vehicle phases is evaluated and a fully-actuated logic is designed. Regarding a typical four-leg intersection of two arterials， the simulation experiment environment is created by Vissim and Python. D-optimal design is performed to develop an experimental scheme. A total of 162，000 experimental scenarios are developed for the intersections with the new and conventional signal timing techniques， respectively. The experimental results indicate that the new technique with the recommended conversion ratio threshold of vehicle extended length has an advantage over the conventional one in reducing the average vehicle delay. The heavier the intersection-wide traffic load， the greater the advantage of the new technique over the conventional one.

Key words: engineering of communications and transportation system, fully-actuated signal timing, connected vehicles, isolated signalized intersection, traffic simulation

CLC Number:

U491

Hong-feng XU,Hong-jin CHEN,Dong ZHANG,Qian-hui LU,Na AN,Xian-cai Geng. Fully⁃actuated signal timing technique for isolated signalized intersections in connected vehicle environment[J].Journal of Jilin University(Engineering and Technology Edition), 2022, 52(6): 1324-1336.

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构成要素	下限	上限	步长
交叉口加载机动车交通量总和/（veh·h^-1）	100	6000	10
东西道路加载机动车交通量占比/%	40	60	1
北进口加载机动车交通量占比/%	35	65	1
东进口加载机动车交通量占比/%	35	65	1
北、东、南、西进口的左转机动车占比/%	15	25	0.2
北、东、南、西进口的右转机动车占比/%	5	10	0.2
大型车占比/%	1	5	0.2
中型车占比/%	5	10	0.2

序号	安全距离		饱和流率/（pc·h^-1·ln^-1）
序号	附加部分/m	倍数部分/m	饱和流率/（pc·h^-1·ln^-1）
1	2.5	3.5	1814.65
2	2.3	3.3	1894.70
3	2.1	3.1	1979.50
4	1.9	2.9	2072.20
5	1.7	2.7	2172.00

交通负荷等级		低			中			高
导向车道长度/m		50	60	70	50	60	70	50	60	70
扩展车长转化率阈值	0.1	20.790	20.736	20.358	26.359	26.478	25.583	47.585	46.869	42.640
	0.15	20.589	20.572	20.321	25.378	25.433	25.014	44.322	43.898	41.162
	0.2	20.537	20.544	20.379	25.089	24.971	24.558	43.637	42.239	38.611
	0.25	20.534	20.563	20.370	24.747	24.638	24.241	42.548	40.460	36.590
	0.3	20.508	20.566	20.335	24.465	24.402	24.003	41.593	38.707	35.319
	0.35	20.502	20.498	20.339	24.336	24.240	24.063	40.635	37.787	35.213
	0.4	20.464	20.498	20.323	24.193	24.259	24.139	39.931	38.077	35.520
	0.45	20.422	20.490	20.317	24.108	24.348	24.297	40.938	39.075	36.455
	0.5	20.418	20.482	20.322	24.212	24.478	24.457	43.703	41.294	38.279
	0.55	20.424	20.488	20.328	24.370	24.670	24.627	48.999	46.194	42.406
	0.6	20.409	20.488	20.331	24.661	24.926	24.848	56.176	55.134	50.444
	0.65	20.406	20.489	20.332	25.198	25.350	25.139	63.154	63.592	60.112
	0.7	20.410	20.491	20.332	25.567	25.649	25.460	66.188	67.385	65.226
	0.75	20.412	20.491	20.333	25.793	25.901	25.693	67.424	68.455	66.970
	0.8	20.411	20.492	20.333	25.933	26.080	25.834	67.865	68.765	67.281
	0.85	20.412	20.492	20.333	26.057	26.169	25.908	68.030	68.837	67.207
	0.9	20.411	20.492	20.333	26.103	26.261	25.981	67.937	68.713	67.238

导向车道长度/m	交通负荷等级
导向车道长度/m	低	中	高
50	0.45、0.5、0.55、0.6、0.65、0.7、0.75、0.8、0.85、0.9	0.45	0.4
60	0.35、0.4、0.45、0.5、0.55、0.6、0.65、0.7、0.75、0.8、0.85、0.9	0.35、0.4	0.35
70	0.1、0.15、0.25、0.3、0.35、0.4、0.45、0.5、0.55	0.3	0.3、0.35

导向车道长度/m	交通负荷等级	新技术交叉口	传统技术交叉口
50	低	20.422	20.675
	中	24.108	25.291
	高	39.931	45.867
60	低	20.498	20.771
	中	24.240	25.458
	高	37.787	44.996
70	低	20.335	20.632
	中	24.003	25.255
	高	35.319	41.600

Fully⁃actuated signal timing technique for isolated signalized intersections in connected vehicle environment

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