Structural equation model for effects of edge line markings on risk of rear-end collision

doi:10.16265/j.cnki.issn1003-3033.2017.03.019

Abstract

Abstract: To study the effect of driver's risk perception of rear-end collisions on car-following safety, the direct perception and indirect perception of the risk of rear-end collisions were preliminarily defined, and then the corresponding risk sources were also excavated in depth. Data on vehicle flows under practical conditions were collected by on-road field observation, and then the interactive causal relationships between various factors and the risk of rear-end collisions were explored with a SEM. The results show that the edge line markings with gap and/or offset give a "discontinuity effect", which leads to an increase in time headways,that the "discontinuity effect", the perception of edge rate and the collision estimation can synergistically increase the intensity of braking and then increase the time headways,and that the direct perception of risk of rear-end collisions can perform better in increasing time headways than the indirect one.

Key words: traffic engineering, risk of rear-end collisions, time headway, on-road experiment, structural equation model(SEM), discontinuous edge line markings

CLC Number:

DING Naikan, ZHU Shunying, WANG Hong, JIAO Nisha. Structural equation model for effects of edge line markings on risk of rear-end collision[J]. China Safety Science Journal, 2017, 27(3): 106-110.

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