| Project/Area Number |
25420042
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | National Traffic Safety and Environment Laboratory |
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Principal Investigator |
Matsui Yasuhiro 独立行政法人交通安全環境研究所, その他部局等, 主席研究員 (00426230)
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| Co-Investigator(Kenkyū-buntansha) |
水戸部 一孝 秋田大学, 理工学研究科, 教授 (60282159)
山本 創太 芝浦工業大学, 工学部, 教授 (80293653)
一杉 正仁 滋賀医科大学, 医学部, 教授 (90328352)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 自転車乗員 / 頭部傷害 / 被害軽減ブレーキ / ヘルメット / 生体力学 / インパクトバイオメカニクス / 交通事故 / 交通事故発生メカニズム |
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| Outline of Final Research Achievements |
The mechanism of accidents involving cyclists was clarified from the investigation of cyclist behavioral characteristics and near-miss situations between cars and bicycles, who would have a higher potential to meet a car-to-cyclist accident by low visibility due to obstructions. Then, the relationship between the car impact velocity and fatality risk of cyclists was defined from real-world accident data. It was evident that a 10 km/h reduction in impact velocity could mitigate the fatality risk of cyclists in cases with impact velocities of 40 km/h or more. When the impact velocity was 30 km/h or less, the fatality risks of cyclists were 1% or less. If active safety devices that use sensors for cyclist detection can operate appropriately and reduce the impact velocities, cyclist injuries will be greatly mitigated. Finally, the effect of wearing a helmet was assessed for protection of the cyclist’s head.
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