Simulation analysis on traffic safety of signal-coordinated arteries

doi:10.16265/j.cnki.issn1003-3033.2020.03.022

Abstract

Abstract: In order to reduce accidents of signal-coordinated arteries, changes of traffic safety performance before and after adopting coordinated signal control on arteries were explored. Then, with data from Shuhan road in Chengdu collected, SSAM was established based on traffic simulation conflicts. Finally, a kernel regression model was used to fit simulated traffic conflicts, and safety of arteries before and after coordinated signal control was evaluated based on fitting results. The results show that arteries with signal-coordinated control comparatively has worse safety performance when traffic volume is under 3 864 pcu/h. There are more conflicts as small cars reach a too high or too low proportion(P<0.73 or P>0.83)in traffic flow, and signal-coordinated arteries have fewer crossing conflicts and more rear-end conflicts.

Key words: signal-coordinated arteries, traffic safety, microscopic traffic simulation, surrogate safety assessment model (SSAM), kernel regression

CLC Number:

X913.3

JIANG Xinguo, REN Hankun, FAN Yingfei, LI Xiang, FU Chuanyun. Simulation analysis on traffic safety of signal-coordinated arteries[J]. China Safety Science Journal, 2020, 30(3): 143-149.

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