交通・物流部門大会講演論文集
Online ISSN : 2424-3175
セッションID: TL3-4
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自動車の自動速度制御装置が対自転車の出会い頭事故の低減に与える効果
*髙木 裕太LEE JIEUN齊藤 裕一伊藤 誠
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One of the major important issues in road traffic safety is to reduce the number of vehicle-cyclist (or pedestrian) collisions at blind intersections with poor visibility. Relying on information of speed limits, an Intelligent Speed Assistance system (ISA) indicates the speed limit information to the driver or performs a control intervention to avoid exceeding the speed limit. The purpose of this study is to investigate the effect of compliance with the speed limit by the ISA on reducing the number of vehicle-cyclist collisions, by using near-miss incident data at blind intersections. The investigation is based on the visualization of a safety margin observed as drivers adjust their vehicle speed to a given road environment context. First, the relationship between the vehicle speed and the safety margin was analyzed. Next, the effect of guiding the vehicle speed to the speed limit on the reduction of collisions under hazardous events of smaller safety margins was analyzed. Finally, this study investigated limitations of the effect of ISA-induced speed reductions on vehicle safety. The main finding of this study was that the ISA-induced speed reductions could lead approximately half of hazardous events into acceptable events with the enough safety margin.

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