JARI Research Journal
Online ISSN : 2759-4602
Volume 2023, Issue 3
JARI Research Journal 2023.03
Displaying 1-9 of 9 articles from this issue
Research Report
  • -Preliminary Survey on Children’s Understanding of Pedestrian Accidents Caused by Them and Behavioral Script in Crossing a Road -
    Akira OHTANI, Hiroshi HASHIMOTO
    Article type: Research Report
    2023 Volume 2023 Issue 3 Article ID: JRJ20230301
    Published: 2023
    Released on J-STAGE: January 21, 2025
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
  • Azusa KURIYAMA, Akira OHTANI
    Article type: Research Report
    2023 Volume 2023 Issue 3 Article ID: JRJ20230303
    Published: 2023
    Released on J-STAGE: January 21, 2025
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
  • Iori YAMAGUCHI, Genya ABE
    Article type: Research Report
    2023 Volume 2023 Issue 3 Article ID: JRJ20230304
    Published: 2023
    Released on J-STAGE: January 21, 2025
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    In recent years, although the number of traffic accident fatalities in Japan has been decreasing, the ratio of accidents while walking is higher than that of riding in a car. Looking at the number of pedestrian fatalities by law violation, there are many fatalities that occur when pedestrians rush-out from the front or rear of a vehicle, especially accidents where the pedestrian uses the vehicle as a shield. Therefore, in this study, we first summarized the literature on the safety evaluation of pedestrian rush-out scenarios from blind-spot areas. In previous literature, the safety evaluation of general drivers using the evaluation index for driving speed is not necessarily sufficient. Therefore, we conducted a driving experiment in a blind spot scene for general drivers using the “JARI-ARV”, and clarified the current safety of driver behavior based on the safety evaluation at driving speed.
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  • Koji MIKAMI, Yoshihiro SUKEGAWA, Keisuke FUKUYAMA
    Article type: Research Report
    2023 Volume 2023 Issue 3 Article ID: JRJ20230305
    Published: 2023
    Released on J-STAGE: January 21, 2025
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    Traffic accident investigations involving hybrid vehicles are increasing. In this study, rear crash energy absorption characteristics of hatchback sedan type hybrid vehicles were investigated through a full-wrap rigid barrier collision experiment. As a result, the characteristics became quadratically stiffer in the range of small deformation (0 to 0.25 m), which is softer than a conventional engine vehicle. In addition, the range of large deformation (0.25 to 0.7 m), hardens sharply and rises linearly. Using these characteristics, an energy absorption diagram for hybrid vehicles was proposed. This diagram can be used to analyze rear-end accidents of hybrid vehicles more accurately, and is expected to be useful for accident reconstruction.
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  • Ryo IWAKI, Yuichi FUJITA, Tomoyuki YOSHIDA
    Article type: Research Report
    2023 Volume 2023 Issue 3 Article ID: JRJ20230306
    Published: 2023
    Released on J-STAGE: January 21, 2025
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
    In this study, we examined the influence of drinking alcohol on driving behavior to detect drunk driving from the a driver's driving behavior. We conducted an experiment on driving under the influence of alcohol using a driving simulator, compared the distribution trend of driving behavior with and without drinking alcohol, and analyzed how the influence of alcohol affects driving behavior. The results indicated that the influence of drinking alcohol on driving operation and vehicle behavior appeared in lateral indicators such as steering wheel angle, not longitudinal indicators such as accelerator operation and speed. Moreover, a significant regression equation was derived by focusing on these indicators and using multiple regression analysis with breath alcohol concentration (BrAC) as the dependent variable. When the presence or absence of alcohol consumption was determined from the estimated BrAC, with the true positive detection rate set to about approximately 70%, the false positive rate was about approx
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