Title: Comparison of the landing kinematics of pedestrians and cyclists during ground impact determined from vehicle collision video records

Authors: Yong Han; Quan Li; Yubin Qian; Dayong Zhou; Mats Svensson

Addresses: Xiamen University of Technology, Xiamen, China; Fujian Collaborative Innovation Center for R&D of Coach and Special Vehicle, Xiamen, China ' Xiamen University of Technology, Xiamen, China; Fujian Collaborative Innovation Center for R&D of Coach and Special Vehicle, Xiamen, China ' Shanghai University of Engineering Science, Shanghai, China ' Key Laboratory of Automobile Safety Technology of Zhejiang Province, Hangzhou 310052, China ' Chalmers University of Technology, SE-412 96 Gothenburg, Sweden

Abstract: The purpose of this study was to investigate the landing kinematics (LK) of pedestrians and cyclists and to provide an analysis of the influencing factors. A total of 112 pedestrian cases and 51 cyclist cases with video information were analysed. The results showed that the pedestrians' and cyclists' landing kinematics depends on the vehicle front-end shape and impact velocity. In this LK1, the pedestrian/cyclist body had a clear rotation speed during ground contact. In this case, 71% of the cyclists and 39% of the pedestrians were found head firstly contact to the ground. In the most frequent LK2, the pedestrian/cyclist was thrown upward-forward and then landed without rotational speed (46% of all pedestrian and 49% of all cyclist cases). Research on the relation between the vehicle front shape and the LK of pedestrians/cyclists can guide the safety design of a motor vehicle for reducing head injury risk.

Keywords: pedestrian accident; cyclist accident; accidents videos; landing kinematics.

DOI: 10.1504/IJVS.2018.097708

International Journal of Vehicle Safety, 2018 Vol.10 No.3/4, pp.212 - 234

Received: 04 Jun 2018
Accepted: 20 Jul 2018

Published online: 31 Jan 2019 *

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