A Study of the Leg-Movement Characteristics of Young and Elderly People During Emergency Braking in Different Sitting Postures

The number of traffic accidents and the number of fatalities are on a downward trend. On the other hand, the number of traffic accidents involving the elderly is on the increase. One of the reasons for this is the decline in driving ability due to aging. In this study, we focused the characteristics...

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Main Authors: Masashi Makita, Akinari Hirao, Hiroaki Fujii
Format: Article
Language:English
Published: Society of Automotive Engineers of Japan, Inc. 2022-04-01
Series:International Journal of Automotive Engineering
Online Access:https://www.jstage.jst.go.jp/article/jsaeijae/13/2/13_20224273/_article/-char/ja
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author Masashi Makita
Akinari Hirao
Hiroaki Fujii
author_facet Masashi Makita
Akinari Hirao
Hiroaki Fujii
author_sort Masashi Makita
collection DOAJ
description The number of traffic accidents and the number of fatalities are on a downward trend. On the other hand, the number of traffic accidents involving the elderly is on the increase. One of the reasons for this is the decline in driving ability due to aging. In this study, we focused the characteristics of the decline in driving ability such as the inability to brake sufficiently in an emergency. Specifically, by comparing two sitting postures (user-selected and instructed), we analyzed the characteristics of the accelerator pedal-to-brake pedal movement and the braking force of the elderly. In addition, the characteristics of aging were also analysed by comparing the results with those of younger subjects. The results showed that the step-over time was faster in the instructed posture for both the young and the elderly. The maximum braking force was stronger in the instructed posture for both the young and the elderly. There was no difference in braking force between the young and the elderly.
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spelling doaj.art-ec39e86603b04cacb35087f6085e2e1c2024-03-06T06:15:40ZengSociety of Automotive Engineers of Japan, Inc.International Journal of Automotive Engineering2185-09922022-04-01132687310.20485/jsaeijae.13.2_68A Study of the Leg-Movement Characteristics of Young and Elderly People During Emergency Braking in Different Sitting PosturesMasashi Makita0Akinari Hirao1Hiroaki Fujii2Faculty of Science and Engineering, Teikyo UniversityNational Institute of Advanced Industrial Science and TechnologyFaculty of Medical Technology, Teikyo UniversityThe number of traffic accidents and the number of fatalities are on a downward trend. On the other hand, the number of traffic accidents involving the elderly is on the increase. One of the reasons for this is the decline in driving ability due to aging. In this study, we focused the characteristics of the decline in driving ability such as the inability to brake sufficiently in an emergency. Specifically, by comparing two sitting postures (user-selected and instructed), we analyzed the characteristics of the accelerator pedal-to-brake pedal movement and the braking force of the elderly. In addition, the characteristics of aging were also analysed by comparing the results with those of younger subjects. The results showed that the step-over time was faster in the instructed posture for both the young and the elderly. The maximum braking force was stronger in the instructed posture for both the young and the elderly. There was no difference in braking force between the young and the elderly.https://www.jstage.jst.go.jp/article/jsaeijae/13/2/13_20224273/_article/-char/ja
spellingShingle Masashi Makita
Akinari Hirao
Hiroaki Fujii
A Study of the Leg-Movement Characteristics of Young and Elderly People During Emergency Braking in Different Sitting Postures
International Journal of Automotive Engineering
title A Study of the Leg-Movement Characteristics of Young and Elderly People During Emergency Braking in Different Sitting Postures
title_full A Study of the Leg-Movement Characteristics of Young and Elderly People During Emergency Braking in Different Sitting Postures
title_fullStr A Study of the Leg-Movement Characteristics of Young and Elderly People During Emergency Braking in Different Sitting Postures
title_full_unstemmed A Study of the Leg-Movement Characteristics of Young and Elderly People During Emergency Braking in Different Sitting Postures
title_short A Study of the Leg-Movement Characteristics of Young and Elderly People During Emergency Braking in Different Sitting Postures
title_sort study of the leg movement characteristics of young and elderly people during emergency braking in different sitting postures
url https://www.jstage.jst.go.jp/article/jsaeijae/13/2/13_20224273/_article/-char/ja
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