文章基本信息

标题：Traffic conflict assessment for non-lane-based movements of motorcycles under congested conditions
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作者：Long Xuan Nguyen ; Shinya Hanaoka ; Tomoya Kawasaki 等
期刊名称：IATSS Research
印刷版ISSN：0386-1112
出版年度：2014
卷号：37
期号：2
页码：137-147
DOI：10.1016/j.iatssr.2013.10.002
语种：English
出版社：Elsevier
摘要：Traffic conflict under congested conditions is one of the main safety issues of motorcycle traffic in developing countries. Unlike cars, motorcycles often display non-lane-based movements such as swerving or oblique following of a lead vehicle when traffic becomes congested. Very few studies have quantitatively evaluated the effects of such non-lane-based movements on traffic conflict. Therefore, in this study we aim to develop an integrated model to assess the traffic conflict of motorcycles under congested conditions. The proposed model includes a concept of safety space to describe the non-lane-based movements unique to motorcycles, new features developed for traffic conflict assessment such as parameters of acceleration and deceleration, and the conditions for choosing a lead vehicle. Calibration data were extracted from video clips taken at two road segments in Ho Chi Minh City. A simulation based on the model was developed to verify the dynamic non-lane-based movements of motorcycles. Subsequently, the assessment of traffic conflict was validated by calculating the probability of sudden braking at each time interval according to the change in the density of motorcycle flow. Our findings underscore the fact that higher flow density may lead to conflicts associated with a greater probability of sudden breaking. Three types of motorcycle traffic conflicts were confirmed, and the proportions of each type were calculated and discussed.
关键词：Motorcycle;Non-lane-based movement;Traffic conflict;Simulation