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Load and impact conditions for head injuries in car-to-pedestrian and car-to-cyclist accidents : a comparison of real accidents and simulations

  • Pedestrian and cyclist are the most vulnerable road users in traffic crashes. One important aspect of this study was the comparable analysis of the exact impact configuration and the resulting injury patterns of pedestrians and cyclists in view of epidemiology. The secondary aim was assessment of head injury risks and kinematics of adult pedestrian and cyclists in primary and secondary impacts and to correlate the injuries related to physical parameters like HIC value, 3ms linear acceleration, and discuss the technical parameter with injuries observed in real-world accidents based documented real accidents of GIDAS and explains the head injuries by simulated load and impact conditions based on PC-Crash and MADYMO. A subsample of n=402 pedestrians and n=940 bicyclists from GIDAS database, Germany was used for preselection, from which 22 pedestrian and 18 cyclist accidents were selected for reconstruction by initially using PC-Crash to calculate impact conditions, such as vehicle impact velocity, vehicle kinematic sequence and throw out distance. The impact conditions then were employed to identify the initial conditions in simulation of MADYMO reconstruction. The results show that cyclists always suffer lower injury outcomes for the same accident severity. Differences in HIC, head relative impact velocity, 3ms linear contiguous acceleration, maximum angular velocity and acceleration, contact force, throwing distance and head contact timing are shown. The differences of landing conditions in secondary impacts of pedestrians and cyclists are also identified. Injury risk curves were generated by logistic regression model for each predicting physical parameters.

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Author:Yong Chen, Jikuang Yang, Dietmar Otte
Document Type:Conference Proceeding
Date of Publication (online):2012/08/03
Contributing corporation:Research Center of Vehicle and Traffic Safety <Changsa>
Release Date:2012/08/03
Tag:Fußgänger; Geschwindigkeit; Konferenz; Kopf; PKW; Radfahrer; Schweregrad (Unfall; Simulation; Unfall; Unfallrekonstruktion; Verletzung; Verletzung); Zusammenstoß
Accident; Car; Collision; Conference; Cyclist; Head; Injury; Pedestrian; Reconstruction (accid); Severity (accid; Simulation; Speed; injury)
Weitere beteiligte Körperschaften: Chalmers University of Technology <Göteborg> / Department of Applied Mechanics; Medizinische Hochschule Hannover / Verkehrsunfallforschung
Source:4rd International Conference on ESAR "Expert Symposium on Accident Research", S. 294-308
Institutes:Sonstige / Sonstige
Dewey Decimal Classification:3 Sozialwissenschaften / 36 Soziale Probleme, Sozialdienste / 360 Soziale Probleme und Sozialdienste; Verbände
collections:BASt-Beiträge / ITRD Sachgebiete / 81 Unfallstatistik
BASt-Beiträge / ITRD Sachgebiete / 84 Personenschäden
BASt-Beiträge / Tagungen / International Conference on ESAR / 4th International Conference on ESAR

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