TY - CONF A1 - Dias, João M.P. A1 - Paulino, T.M. T1 - Powered two wheelers accident investigation and reconstruction N2 - One of the major problems of road safety in Europe is the powered two wheelers accidents. One of the European countries with one of the highest rates is Portugal where in 2006, mopeds and motorcycles fatalities represented 27% of all road users deaths. In this work, a deep analysis and overview of the current state of mopeds and motorcycles accidents for the 2004-2006 period is presented. Within this period 830 PTW occupants die, 2958 have been severely injured and 25000 suffer slight injuries. A detailed analysis of the conditions of these accidents has been carried out, using the data of the national accident database. This analysis provides global information, about geographic environmental conditions, driver- characteristics among others. From this data detailed information is obtained allowing to know when, where and who. In order to answer the question why more a widely collection of data has been collect for 70 accidents. The data has been collected using OECD methodology. For these accidents a detailed reconstruction has been carried out, what is especially important for fatal accidents where for instance speed in an important factor. From these collection and analysis of data a wider overview of facts and measures are extracted. Among them, some are emphasized such as that the quality and non-use of helmets plays an important role in severe and fatal accidents especially for accidents involving moped vehicles, or speed is the most important factor in fatal accidents involving motorcycles. Concerning motorcycle accident reconstruction, different tools can be used depending of the accident scenario and complexity. For simple cases, with specific characteristics, analytical formulation based in vehicle crash dynamics can be use in order to determine the impact speed of the vehicles impact, analysing the skid marks, deformations, victims rest position and considering parameters (EES, vehicle deceleration, etc). Aspects such as the energy absorption capability of motorcycles are also discussed. In the general cases the accident reconstruction software Pc-Crash has been used for the reconstruction of the accident. In very complex cases, has for instance the impact between motorcyclist and barriers, Madymo software is used especially to determine speed from injuries. An example of the impact of a motorcyclist and a motorcyclist-friendly barrier is present to illustrate the benefits and limitations of such systems. KW - Analyse (math) KW - Konferenz KW - Motorradfahrer KW - Portugal KW - Statistik KW - Tödlicher Unfall KW - Unfall KW - Unfallrekonstruktion KW - Accident KW - Analysis (math) KW - Conference KW - Fatality KW - Motorcyclist KW - Portugal KW - Reconstruction (accid) KW - Statistics Y1 - 2009 UR - https://bast.opus.hbz-nrw.de/frontdoor/index/index/docId/486 UR - https://nbn-resolving.org/urn:nbn:de:hbz:opus-bast-4862 N1 - Weitere beteiligte Körperschaft: Technical University ER -