Safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour

Abstract Human reaction plays a key role in improved protection upon emergent traffic situations with motor vehicles. Understanding the underlying behaviour mechanisms can combine active sensing system on feature caption and passive devices on injury mitigation for automated vehicles. The study aims...

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Autores principales:	Bingbing Nie, Quan Li, Shun Gan, Bobin Xing, Yuan Huang, Shengbo Eben Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/075b455608484b35865b855acb9f3542
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spelling	oai:doaj.org-article:075b455608484b35865b855acb9f35422021-12-02T14:21:59ZSafety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour10.1038/s41598-021-82331-z2045-2322https://doaj.org/article/075b455608484b35865b855acb9f35422021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82331-zhttps://doaj.org/toc/2045-2322Abstract Human reaction plays a key role in improved protection upon emergent traffic situations with motor vehicles. Understanding the underlying behaviour mechanisms can combine active sensing system on feature caption and passive devices on injury mitigation for automated vehicles. The study aims to identify the distance-based safety boundary (“safety envelope”) of vehicle–pedestrian conflicts via pedestrian active avoidance behaviour recorded in well-controlled, immersive virtual reality-based emergent traffic scenarios. Via physiological signal measurement and kinematics reconstruction of the complete sequence, we discovered the general perception-decision-action mechanisms under given external stimulus, and the resultant certain level of natural harm-avoidance action. Using vision as the main information source, 70% pedestrians managed to avoid the collision by adapting walking speeds and directions, consuming overall less “decision” time (0.17–0.24 s vs. 0.41 s) than the collision cases, after that, pedestrians need enough “execution” time (1.52–1.84 s) to take avoidance action. Safety envelopes were generated by combining the simultaneous interactions between the pedestrian and the vehicle. The present investigation on emergent reaction dynamics clears a way for realistic modelling of biomechanical behaviour, and preliminarily demonstrates the feasibility of incorporating in vivo pedestrian behaviour into engineering design which can facilitate improved, interactive on-board devices towards global optimal safety.Bingbing NieQuan LiShun GanBobin XingYuan HuangShengbo Eben LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bingbing Nie Quan Li Shun Gan Bobin Xing Yuan Huang Shengbo Eben Li Safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour
description	Abstract Human reaction plays a key role in improved protection upon emergent traffic situations with motor vehicles. Understanding the underlying behaviour mechanisms can combine active sensing system on feature caption and passive devices on injury mitigation for automated vehicles. The study aims to identify the distance-based safety boundary (“safety envelope”) of vehicle–pedestrian conflicts via pedestrian active avoidance behaviour recorded in well-controlled, immersive virtual reality-based emergent traffic scenarios. Via physiological signal measurement and kinematics reconstruction of the complete sequence, we discovered the general perception-decision-action mechanisms under given external stimulus, and the resultant certain level of natural harm-avoidance action. Using vision as the main information source, 70% pedestrians managed to avoid the collision by adapting walking speeds and directions, consuming overall less “decision” time (0.17–0.24 s vs. 0.41 s) than the collision cases, after that, pedestrians need enough “execution” time (1.52–1.84 s) to take avoidance action. Safety envelopes were generated by combining the simultaneous interactions between the pedestrian and the vehicle. The present investigation on emergent reaction dynamics clears a way for realistic modelling of biomechanical behaviour, and preliminarily demonstrates the feasibility of incorporating in vivo pedestrian behaviour into engineering design which can facilitate improved, interactive on-board devices towards global optimal safety.
format	article
author	Bingbing Nie Quan Li Shun Gan Bobin Xing Yuan Huang Shengbo Eben Li
author_facet	Bingbing Nie Quan Li Shun Gan Bobin Xing Yuan Huang Shengbo Eben Li
author_sort	Bingbing Nie
title	Safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour
title_short	Safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour
title_full	Safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour
title_fullStr	Safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour
title_full_unstemmed	Safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour
title_sort	safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/075b455608484b35865b855acb9f3542
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Safety envelope of pedestrians upon motor vehicle conflicts identified via active avoidance behaviour

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