Traffic safety analysis in the transition period towards the autonomous society

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K04648
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 22050:Civil engineering plan and transportation engineering-related
• Research Institution: Akita University
• Principal Investigator: Hamaoka Hidekatsu 秋田大学, 理工学研究科, 教授 (70262269)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 交通安全 / 脳波 / ドライビングシミュレータ

Outline of Final Research Achievements

In recent years, wire ropes have been installed on two-lane expressways, significantly reducing the risk of head-on collisions. However, there has been an increase in minor contact accidents, which have become a social issue. Driver distraction is considered a major cause of these accidents. Therefore, in this study, we attempted to quantify driver distraction based on brainwave measurements. By proposing a method to divide the frequency of alpha waves into three segments, we were able to reveal the extent of attentional decline. Based on these results, we evaluated accident prevention measures involving wire rope contact using a subject experiment with a driving simulator. It was revealed that the proposed approach of displaying a green guiding line on the road to assist in maintaining the driving position, as suggested in this study, yielded the best results.

Free Research Field

交通工学

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、最終的に暫定二車線高速道路に整備されているワイヤーロープへの接触事故防止対策を提示できたことにある。運転中の左右ブレを減少させ、安定的にワイヤーロープから離れて走行できる環境を構築できたことは、今後の交通事故減少に大きく貢献する。一方で、暫定二車線高速道路では橋梁やトンネル部など、まだワイヤーロープが整備されていない区間もあるため、そこへ導入することも考えられる。仮に導入されたた場合は、暫定二車線区間のすべてが誘導線となるため、運転者にとって位置合わせのためのストレスが大きくなる（疲労感が高くなる）恐れもある。今後は、それも軽減できる対策を検討していゆきたい。