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Integrated safety of car-cyclist collisions toward autonomous driving

Research Project

Project/Area Number 19H02259
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22050:Civil engineering plan and transportation engineering-related
Research InstitutionNagoya University

Principal Investigator

Mizuno Koji  名古屋大学, 工学研究科, 教授 (80335075)

Co-Investigator(Kenkyū-buntansha) 青木 宏文  名古屋大学, 未来社会創造機構, 特任教授 (20713093)
一杉 正仁  滋賀医科大学, 医学部, 教授 (90328352)
伊藤 大輔  名古屋大学, 工学研究科, 助教 (90432244)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords統合安全 / 自転車 / ヒヤリハット / 出会い頭事故 / 運転支援 / 交通安全 / 自転車事故 / ドライバ応答 / 衝突被害軽減ブレーキ
Outline of Research at the Start

本研究では四輪車対自転車衝突事故を対象として,事故とヒヤリハットのドライブレコーダ映像を比較し,事故の発生因子と閾値を求める.ドライビングシミュレータ実験から,衝突回避が困難な状況下の運転者行動を分析し,四輪運転者の行動モデルを作成する.このモデルを衝突の力学モデルと結合させて,統合事故再現データベースを構築する.データベースに衝突被害軽減ブレーキ等の衝突回避デバイスを導入し,事故における衝突回避効果を得る.さらに,この回避困難な衝突について有限要素解析を行い,自転車乗員の被害軽減の方策を得る.本研究では,事故発生から被害者保護までシームレスにつなぐ統合安全による自転車乗員保護方法を提示する.

Outline of Final Research Achievements

The purpose of this study is to understand the causes of accidents between cars and bicycles. We collected accident data from a drive recorder (DR) and compared them with near-misses to construct three models to determine the accident occurrences: (1) a kinematic model of accident occurrence based on the temporal relationship among time-to-collision, brake reaction time, and braking time; (2) a probability model based on logistic regression; and (3) a decision tree model that shows the hierarchical meanings of the variables.
From driving simulator experiments, we found that the brake reaction time depends on the driver's eye position. The accidents were reconstructed for cars installing autonomous braking systems, showed that field of view of sensor was most effective in preventing accidents, and accidents that cannot be avoided even with ultimate AEB were identified.

Academic Significance and Societal Importance of the Research Achievements

本研究開始前は自動運転によりすべての事故がゼロになるとの議論があった.本研究では,四輪車対自転車の出会い頭事故を検討し,衝突余裕時間が1秒未満の自転車の飛び出し事故は究極的な性能を持つAEBでも回避できないことを示した.これらは交差点でAIなどにより危険を予知しつつ速度を落として走行するなどの考え方につながった.
また,ドライブレコーダの事故分析とその再現から,視線の向きと事故発生の関係を示し,さらに緊急時のドライバの応答特性を取得した.これらは,ドライバの運転状態の検知や事故回避につながる.ドライバ応答と事故発生の関係を求める研究を進展させ,交通事故死者数ゼロに貢献するための実装を目指す.

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (16 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (10 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] Active Safety Engineering LLC(米国)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Driver Responses to Cyclists Crossing from Near and Far Side in Driving Simulator Experiments2022

    • Author(s)
      Zhao Yuqing、Mizuno Koji、Aoshima Yuhei、N.Kanianthra Joseph、Inagami Makoto
    • Journal Title

      International Journal of Automotive Engineering

      Volume: 13 Issue: 2 Pages: 89-96

    • DOI

      10.20485/jsaeijae.13.2_89

    • ISSN
      2185-0984, 2185-0992
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental study on car collisions with bicycles equipped with child seats2022

    • Author(s)
      Terashima Takaaki、Kato Kenshiro、Oga Ryo、Takubo Nobuaki、Mizuno Koji
    • Journal Title

      Accident Analysis & Prevention

      Volume: 166 Pages: 106535-106535

    • DOI

      10.1016/j.aap.2021.106535

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The difference in the kinematic and injury risk of cyclists between normal and emergency avoidance postures in vehicle collisions2022

    • Author(s)
      Wu He、Han Yong、Wang Bingyu、Pan Di、Huang Hongwu、Mizuno Koji
    • Journal Title

      International Journal of Crashworthiness

      Volume: 27 Issue: 1 Pages: 1-14

    • DOI

      10.1080/13588265.2022.2074633

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Probabilistic Prediction of Collisions between Cyclists and Vehicles Based on Uncertainty of Cyclists’ Movements2022

    • Author(s)
      Pan Di、Han Yong、Jin Qianqian、Kan Jin、Huang Hongwu、Mizuno Koji、Thomson Robert
    • Journal Title

      Transportation Research Record: Journal of the Transportation Research Board

      Volume: 2677 Issue: 3 Pages: 1151-1164

    • DOI

      10.1177/03611981221121270

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Analysis of fall kinematics and injury risks in ground impact in car-pedestrian collisions using impulse2022

    • Author(s)
      Mizuno Koji、Horiki Masahiro、Zhao Yuqing、Yoshida Airi、Wakabayashi Asei、Hosokawa Toshio、Tanaka Yoshinori、Hosokawa Naruyuki
    • Journal Title

      Accident Analysis & Prevention

      Volume: 176 Pages: 106793-106793

    • DOI

      10.1016/j.aap.2022.106793

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparative analysis of AEB effectiveness based on typical and atypical scenarios of electric two-wheeler accidents in China2022

    • Author(s)
      Pan Di、Han Yong、Jin Qianqian、Wu He、Wang Bingyu、Huang Hongwu、Mizuno Koji
    • Journal Title

      Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering

      Volume: 0 Issue: 2-3 Pages: 1-11

    • DOI

      10.1177/09544070221128173

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Head AIS 4+ Injury Thresholds for the Elderly Vulnerable Road User Based on Detailed Accident Reconstructions2021

    • Author(s)
      Wu He、Han Yong、Pan Di、Wang Bingyu、Huang Hongwu、Mizuno Koji、Thomson Robert
    • Journal Title

      Frontiers in Bioengineering and Biotechnology

      Volume: 9 Pages: 1-11

    • DOI

      10.3389/fbioe.2021.682015

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ドライブレコーダを用いた四輪車対自転車の出会い頭事故の分析2021

    • Author(s)
      趙 雨晴、水野幸治
    • Journal Title

      自動車技術会誌

      Volume: 75 Pages: 96-101

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Analysis of kinematic behavior of pedestrians/cyclists in vehicle collisions using impulse2020

    • Author(s)
      Shinya Murano, Chunyu Kong, Koji Mizuno, Daisuke Ito, Daisuke Nakane, Asei Wakabayashi
    • Journal Title

      Traffic Injury Prevention

      Volume: 21 Pages: 1-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] AEB effectiveness evaluation based on car-to-cyclist accident reconstructions using video of drive recorder2019

    • Author(s)
      Yuqing Zhao, Daisuke Ito, Koji Mizuno
    • Journal Title

      Traffic Injury Prevention

      Volume: 20 Issue: 1 Pages: 100-106

    • DOI

      10.1080/15389588.2018.1533247

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 力積を用いた自動車衝突における歩行者の路面落下挙動の予測2021

    • Author(s)
      堀木 誠大、水野 幸治、若林 亜星、細川 俊夫、吉田 綾衣梨
    • Organizer
      自動車技術会秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 車対歩行者事故における路面衝突の研究動向2021

    • Author(s)
      水野幸治
    • Organizer
      日本交通科学学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ドライビングシミュレータを用いた 四輪車対自転車の出会い頭事故要因解析2021

    • Author(s)
      青島侑平
    • Organizer
      自動車技術会春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] AEB effective evaluations by accident reconstructions using videos of drive recorders in perpendicular and turning car-to-cyclist collisions2019

    • Author(s)
      Yuqing Zhao, Daisuke Ito, Koji Mizuno, Chunyu Kong
    • Organizer
      IRCOBI Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ドライビングシミュレータによる四輪車対自転車の出会い頭事故再現2019

    • Author(s)
      宮原輝貴,趙 雨晴,伊藤大輔,水野幸治
    • Organizer
      日本交通科学学会講演会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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