非严格优先权下无左转专用相位直行车辆轨迹模型建立

doi:10.13229/j.cnki.jdxbgxb20180110

Abstract

Abstract:

A field survey is conducted to explore the distribution characteristics of through vehicles' trajectories with and without protected left?turn phase at three cross sections under non?strict priority. A driver′s decision process is presented to avoid opposing left?turning vehicles with respect to operational performance. Then the trajectory model of through vehicle with an unprotected left?turn phase is proposed considering three constraints: intersection geometry, velocity of a through vehicle when entering an intersection, and the minimum safe distance between a through vehicle and an opposing left?turning vehicle. At last, the model is validated by actually measured data. The study can provide a better understanding of crossing through maneuver with an unprotected left?turn phase under non?strict priority, and offer the theoretical basis for microscopic traffic simulation.

Key words: engineering of communications and transportation system, trajectory model, unprotected left?turn phase, through vehicle, traffic simulation

CLC Number:

U491.1

Qiao⁃wen BAI,Zhao⁃wei QU,Yong⁃heng CHEN,Shuai XIONG,Chu⁃qing TAO. Modeling on trajectories of through vehicles with an unprotected left⁃turn phase under non⁃strict priority[J].Journal of Jilin University(Engineering and Technology Edition), 2019, 49(3): 673-679.

Figures/Tables 9

Table 1

Fig.1

Table 2

Parameters of probability density function for different sections at different study sites"

断面位置		模型参数
断面位置		$α$	$β$	$γ$
解放大路?同志街南	进口道	15.05	2.11	-1.33
	交叉口内	8.69	7.95	-1.13
	出口道	4.22	0.96	-0.28
解放大路?同志街北	进口道	16.37	1.76	-0.99
	交叉口内	8.46	1.52	-0.80
	出口道	5.61	1.37	-0.55
皓月大路?和平大街	进口道	13.93	2.60	-1.47
	交叉口内	1.37E+8	4.52E+7	-4.52E+7
	出口道	6.43	1.83	-0.77
自由大路?同志街	进口道	45.82	6.90	-5.75
	交叉口内	1.05E+8	4.12E+7	-4.12E+7
	出口道	7.91	2.17	-1.11

Table 2

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

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交叉口	左转控制	调查进口道	车道数	车道宽度/m	样本量
皓月大路?和平大街	无专用相位	东进口	2	3.25	1147
自由大路?同志街	无专用相位	北进口	2	3.00	1066
解放大路?同志街	专用相位	南进口	3	3.25	976
解放大路?同志街	专用相位	北进口	3	3.25	994

Modeling on trajectories of through vehicles with an unprotected left⁃turn phase under non⁃strict priority

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