TY  - CONF
A1  - Portal, Ricardo J.F.
A1  - Dias, João M.P.
T1  - Pedestrian reconstruction tools applied to pedestrian accidents in Portugal
N2  - 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-®.
KW  - Analyse (math)
KW  - Datenerfassung
KW  - Fußgänger
KW  - Geschwindigkeit
KW  - Konferenz
KW  - PKW
KW  - Portugal
KW  - Rechenmodell
KW  - Simulation
KW  - Steifigkeit
KW  - Tödlicher Unfall
KW  - Unfall
KW  - Unfallrekonstruktion
KW  - Zusammenstoß
KW  - Accident
KW  - analyses (math)
KW  - Car
KW  - Collision
KW  - Conference
KW  - Data acquisition
KW  - Fatality
KW  - Mathematical model
KW  - Pedestrian
KW  - Portugal
KW  - Reconstruction (accid)
KW  - Simulation
KW  - Stiffness
KW  - Speed)
Y1  - 2009
UR  - https://bast.opus.hbz-nrw.de/frontdoor/index/index/docId/468
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:opus-bast-4687
ER  -