Pedestrian reconstruction tools applied to pedestrian accidents in Portugal

  • Pedestrian accidents are one of the major concerns related with road accidents around the world. Portugal has one of the highest rates of pedestrian fatalities in Europe. In this paper an overview conditions were the pedestrian accidents occurred in Portugal is presented. In the last years, a project related with the pedestrian accidents has run in Portugal for the period 2004-2006 where 603 people died, 2097 have been severely injured and about 17000 slightly injured. Within this project all the pedestrian accidents in this period have been analysed providing global information about a wide range of aspects, since location, driver and pedestrian characteristics, weather and road conditions, among others. In addition, 50 in-depth accidents have been investigated and the data collected according the Pendant methodology. For this in-depth methodology detailed information about the accident has been collected, including injuries, vehicle damage, road conditions and road user- behaviour and actions. An accident reconstruction has been carried for each case including the determination of the speeds and driver actions, and the analysis of the contributing factors for the accident. Depending of the accident complexity, different methodologies have been used to analyse these accident, from the classical analytical equations such as Simms and Woods, to the use of detailed computational pedestrian models as those included in the commercial software- PC-Crash-® or Madymo-®. Also one of the goals of our investigation is the development of multibody models and methodologies for the reconstruction of pedestrian accidents. Some of these tools integrated in the commercial software Cosmos Motion-® are presented. The advantages of the different approaches are compared and discussed for some of the accidents investigated. With these tools the impact speed can be determined from the projection distance with analytical tools or PC-Crash-®, but more complex tools should be used to determine speed from the injuries, what is especially important for fatal accidents. The influence of the vehicle geometry and stiffness characteristics is another aspect analysed, where the influence of the vehicle stiffness has been determined using a combined multibody-finite elements approach within the software Madymo-®.

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Metadaten
Author:Ricardo J.F. Portal, João M.P. Dias
URN:urn:nbn:de:hbz:opus-bast-4687
Document Type:Conference Proceeding
Language:English
Date of Publication (online):2012/08/02
Contributing corporation:Institute of Mechanical Engineering <Lisbon>
Release Date:2012/08/02
Tag:Analyse (math); Datenerfassung; Fußgänger; Geschwindigkeit; Konferenz; PKW; Portugal; Rechenmodell; Simulation; Steifigkeit; Tödlicher Unfall; Unfall; Unfallrekonstruktion; Zusammenstoß
Accident; Car; Collision; Conference; Data acquisition; Fatality; Mathematical model; Pedestrian; Portugal; Reconstruction (accid); Simulation; Speed); Stiffness; analyses (math)
Source:3rd International Conference on ESAR "Expert Symposium on Accident Research", S. 304-314
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 / 3rd International Conference on ESAR

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