冰雪天气下交叉口信号配时优化方法

doi:10.13229/j.cnki.jdxbgxb20210236

Abstract

Abstract:

In the case of ice and snow weather， the signal control efficiency of the existing signal scheme is substantially reducing， which further leads to the traffic congestion. So starting from the operation characteristics of traffic flow， we analyzed the variation of traffic flow parameters under different snowfall amounts. Using regression fitting， the existing Merriam-Webster delay calculation formula is corrected. Taking the intersection of Jiefang Avenue and Renmin Avenue in Changchun City as an example， Vissim software is used for simulation analysis. The results show that in the ice and snow weather， compared with the signal timing scheme under normal weather conditions， adjusting the signal timing scheme according to the snowfall can effectively reduce the average delay of vehicles at the intersection and improve the traffic efficiency of the intersection. These analysis results are also suitable for the optimal control of traffic signals in all snow and ice weather environments.

Key words: engineering and communications and transportation system, signal intersection, timing optimization, ice and snow conditions, traffic simulation

CLC Number:

U491.5

Ci-yun LIN,Tian-cheng XIE,Wei QIN,Xu GUO,Zheng-hao LI,Zhen ZHENG. Optimization methods of intersection signal timing parameters under ice and snow condition[J].Journal of Jilin University(Engineering and Technology Edition), 2022, 52(10): 2316-2324.

Figures/Tables 19

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Table 5

Recommended value of all red light and yellow light time"

$Δ L m a x$		正常	小雪	中雪	大雪	暴雪
20 m	A	2	3	3	3	3
	AR	2	2	3	3	4
	I	4	5	6	6	7
30 m	A	2	3	3	3	3
	AR	3	3	3	3	4
	I	5	6	6	6	7
40 m	A	2	3	3	3	3
	AR	4	4	4	4	5
	I	6	7	7	7	8
50 m	A	2	3	3	3	3
	AR	4	4	4	4	5
	I	6	7	7	7	8
60 m	A	2	3	3	3	3
	AR	5	5	5	5	6
	I	7	8	8	8	9

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降雪等级	12 h	24 h
小雪	0.1~1.0 mm	0.1~2.5 mm
中雪	1.1~3.0 mm	2.6~5.0 mm
大雪	3.1~6.0 mm	5.1~10.0 mm
暴雪	>6.0 mm	>10.0 mm

降雪厚度/mm	东	西	南	北	总计
0.0	1398	1126	1480	1500	5504
0.7	1287	1001	1421	1343	5052
0.8	1307	994	1317	1328	4946
1.2	1253	998	1281	1195	4727
1.3	1208	974	1278	1284	4744
1.5	1226	999	1320	1313	4858
1.7	1168	948	1241	1249	4606
1.8	1171	931	1236	1227	4565
1.9	1117	952	1105	1208	4382
2.5	1091	885	1161	1103	4240
3.1	1070	864	1119	1121	4174
5.2	1024	826	1104	1094	4048
5.5 6.3 6.7 7.5 8.3 9.7 10.6 11.2 12.1	1038 1018 992 977 925 910 898 862 918	793 817 777 729 788 716 740 782 736	1057 1011 1011 1018 1030 886 898 872 901	1068 1026 1008 977 871 1016 905 892 825	3956 3872 3788 3701 3614 3528 3441 3408 3380
12.3	943	767	832	811	3353

降雪强度/mm	交通量衰减百分比/%
小雪（0.1~2.5 ）	9~20
中雪（2.6~5.0 ）	20~26
大雪（5.1~10.0 ）	26~33
暴雪（>10 ）	33~40

实际值/s	理论值/s	误差/%
MAPE=10.46
70	76	8.57
75	81	8.00
68	62	8.82
63	66	4.76
65	54	16.92
64	55	14.06
83	72	12.05

进口道	转向	小车/pcu	大车/pcu
东	左	228	12
	直	864	48
	右	192	16
西	左	256	12
	直	428	4
	右	340	52
南	左	416	8
	直	872	40
	右	120	0
北	左	172	8
	直	112	64
	右	72	16

Optimization methods of intersection signal timing parameters under ice and snow condition

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