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Institut
A lack of representative European accident data to aid the development of safety policy, regulation and technological advancement is a major obstacle in the European Union. Data are needed to assess the performance of road and vehicle safety and is also needed to support the development of further actions by stakeholders. This short-paper describes the process of developing a data collection and analysis system designed to partly fill these gaps. A project team with members from 7 countries was set up to devise appropriate variable lists to collect fatal crash data under the following topic levels: accident, road environment, vehicle, and road user, using retrospective detailed police reports (n=1,300). The typical level of detail recorded was a minimum of 150 variables for each accident. The project will enable multidisciplinary information on the circumstances of fatal crashes to be interpreted to provide information on a range of causal factors and events surrounding the collisions.
In the context of the COST357 research project, the climatic conditions and requirements for protective helmets for motorcyclists have been examined. The extent to which these factors would influence motorbike handling and accidents in which motorcyclists are involved have also been examined. This project addresses how cognitive abilities of motorcyclists relate to helmet construction factors. In particular, the aspects of motorcycle driver helmets are to be parameterized in order that they may be used subsequently as a basis for future requirement profiles. The task of one working group of the COST357 project has been to analyse accident events and to identify helmet design issues which affect motorcycle drivers while wearing a helmet. This has been achieved by collating accident data across different countries recorded in the course of in-depth investigations at the site of accidents and by combining this with field studies of motorcyclists participating in traffic, but not involved in accidents. This paper presents the study methodology, database and first results of this international survey. The basis of the study has been a total of 424 interviews of motorcyclists and 134 motorcycle accidents, which were collected across Germany, Greece, Italy, Ireland, Portugal and Turkey and combined in a single database.
While many medical studies have dealt with the incidence, nature and treatment of polytrauma the injury-causing accident mechanisms are rarely discussed in detail, mostly due to the lack of documentation of the technical aspects. The present prospective study was started in late 2007 and collects data from traffic accidents with most severely injured in six south- German counties and two larger cities for the duration of one year. It is aimed at identifying and documenting all polytrauma cases (ISS ≥ 16) caused by traffic accidents and their crash circumstances. The data collection is based on an interdisciplinary concept to include both the police, emergency dispatch centers, hospitals and fire departments in the region and is completely anonymous. Potentially relevant cases where an emergency physician was called to the scene of a traffic accident are provided by the dispatch center. All three hospitals in the region suited for the treatment of polytraumatised patients record injuries, major diagnostic and surgery data. Data and images from the accident scene are provided by the police and by fire departments. The latter provide information which is usually not available from the police, like deployed airbags, vehicle extrication measures and detailed views of car interiors. The main objective of the study is to determine the structure of road users who sustain a polytrauma, their crash opponents and the injury patterns found in relation to the collision configuration and the protection by seat belts, air bags and other devices. With detailed documentation of vehicle damage and extrication measures the study is also intended to support the development of injury predictors for pre-hospital treatment and provide field data regarding further improvement of technical rescue.
Im Rahmen des Forschungsvorhabens "Absenkung der Produktions- und Verarbeitungstemperatur von Asphalt durch Zugabe von Bitumenverflüssigern", FE 07.203/2002/CRB, sind Langzeitbeobachtungen der eingerichteten Versuchsstrecken vereinbart. Hierzu werden die Strecken BAB A7 und B 106 nach 2 und 4 Jahren systematisch visuell und messtechnisch beurteilt. Die Ergebnisse werden als Ergänzungen zum Abschlussbericht dargestellt. Die vorliegende Ergänzung fasst den Zustand nach 4-jähriger Verkehrsbelastung zusammen. Die visuelle Zustandserfassung fällt für beide Versuchsstrecken sehr positiv aus. Die temperaturabgesenkt hergestellten Erprobungsabschnitte schneiden dabei auf beiden Strecken mit geringen Vorteilen gegenüber den Referenzstrecken ab. Die messtechnische Beurteilung bestätigt den positiven Eindruck. Es wurden keine bedeutenden Abweichungen in der Längsebenheit festgestellt. Die ermittelten Spurtiefen liegen auf beiden Strecken auf etwa gleichem, sehr niedrigem Niveau. Die Griffigkeit kann für beide Strecken als sehr gut beurteilt werden. Die absoluten Griffigkeitsbeiwerte liegen auf der B 106 mit einem SMA 0/8 S erwartungsgemäß höher als auf der BAB A7. An den aus Bohrkernen extrahierten Bindemitteln wurden Kenndaten ermittelt, die den mit dem Endbericht veröffentlichten Ergebnissen gegenübergestellt wurden. Die Daten dienen zur Ansprache des Alterungsverhaltens der Bindemittel im Beobachtungszeitraum von 8 Jahren und werden daher im Rahmen dieses Zwischenberichtes nicht weiter interpretiert.
It is well known that motorcycle riding is fascinating but quite more dangerous than for example car driving. In 2006, 5,091 persons were killed as victims of crashes occurring on public roads in Germany. 52% (2,683) were car occupants, 16% (793) motorcycle riders, 14% (711) pedestrians, 10% (486) bicycle riders, 5% (235) commercial vehicle occupants, 2% (107) riders of smaller powered two-wheelers, called "Mofa, Moped and Mokick". This shows that motorcycle riders recently are the second largest group of killed traffic participants in Germany. Latest information coming from the Federal Statistics predict for the year 2007 the figure of 4,958 killed road victims in total. This would be again a successful reduction (-133 killed persons or "2.6% compared to the year 2006). But the news coming from the Federal Statistics during the year 2007 and at the begin of 2008 did not always tell the same positive story. It is questioned whether the positive trend of substantially reduced figures of killed road user year by year will longer continue for Germany. That means it could be impossible to reach the ambitious target, set by the European Commission, to cut in half the figure of killed road users until the year 2010 " compared to the figure for the year 2001. It was reported that the group of 45 to 49 years old traffic participants (all traffic modes) is conspicuous with an increase of 30% up to 297 killed road users in total from January to August 2007. This increase can be ascribed in particular by an increase of killed motorcycle riders within this age group. Due to mild weather conditions in Germany in 2007 the season for motorcycle riding began relatively early and this may be a main reason for the increase of the figure of killed motorcycle riders by 16% from January to August 2007. With this background the accident occurrence of motorcycles became more and more essential. As part of the actual discussion about historical trends, recent emphases, causes and relevant structures of the events of motorcycle crashes it is evident, to have latest and carefully updated figures coming from both the Federal Statistics and In-depth studies. The paper will give a contribution to this using the German Federal Statistics and in-depth studies, for example GIDAS. Additional data coming from the DEKRA Motorcycle Accident Database as well as from literature are considered, too. The paper will help to describe the current situation of the accident involvement of motorcycles in Germany.
The following paper presents the nature and mechanism of injuries sustained in frontal impacts, focusing on car to car impacts. It was found that the body regions most frequently sustaining severe to fatal injuries were the legs and the thorax. The nature and mechanism of the injury sustained was investigated only for the thorax injuries, due to their potentially life threatening nature. The analysis revealed that the most frequent cause of the injury recorded was the seatbelt for low severity injuries and the front structure of the vehicle for higher severity injuries. An analysis of the effect of load limiter technology in the restraint system showed that the proportion of occupants who sustained "no thorax injury" did not increase when a load limiter was fitted to the restraint system. However, a decrease in the "organ" and "organ and skeletal" injuries was observed in the load limiter sample. Sample size and variation mean that these findings are not conclusive.
Adverse weather could impair the performance of many important parts in road transportation. In a tropical country, the threats posed by the weather phenomenon can be viewed from a different perspective as the situation may not be as extreme as snow-related problems or excessive temperature in other countries. Specifically in Malaysia, the situation may be underestimated due to several reasons such as the deficiencies in accident reporting and lack of research work. This background research has looked into various publications as well as related data to explain the need of more comprehensive research in the future.
In the last years there has been a decline in accident figures in Germany especially for four wheeled vehicles. At the same time, accident figures for motorcycles remained nearly constant. About 17 % of road traffic fatalities in the year 2006 were motorcyclists. 33 % of these riders were killed in single vehicle crashes. This leads to the conclusion that improving driving dynamics and driving stability of powered two wheelers would yield considerable safety gains. However, the well-known measures for cars and trucks with their proven effectiveness cannot be transferred easily to motorcycles. Therefore studies were carried out to examine the safety potential of Anti Lock Braking Systems (ABS) and Vehicle Stability Control (VSC) for motorcycles by means of accident analysis, driving tests and economical as well as technical assessment of the systems. With regard to ABS, test persons were assigned braking tasks (straight and in-curve) with five different brake systems with and without ABS. Stopping distances as well as stress and strain on the riders were measured for 9 test riders who completed 105 braking manoeuvres each. Knowing the ability of ABS to avoid falls during braking in advance of a crash and taking into account the system costs, a cost benefit analysis for ABS for motorcycles was carried out for different market penetration of ABS, i.e. equipment rates, and different time horizons. The potential of VSC for motorcycles was estimated in two steps. First the kinds of accidents that could be prevented by such a system at all have been analysed. For these accident configurations, simulations and driving tests were then performed to determine if a VSC was able to detect the critical driving situation and if it was technically possible to implement an actuator which would help to stabilise the critical situation.
Each year the traffic accident research teams in Dresden and Hanover provide an in-depth investigation of approximately two thousand accidents, aggregated in the GIDAS database. To accomplish a comprehensive review of each traffic accident recorded, a sensible and thorough encoding of suffered injuries is indispensable. The Abbreviated Injury Scale by AAAM offers a valuable and handy solution to achieve this goal. However, there were a few difficulties in the use of the AIS that came up in the past, which let to necessary improvements for the utilization of the AIS 2005 for GIDAS.
Mit dem BASt-Projekt 82.232/2002 "Bedeutung der Fahrpraxis für den Kompetenzerwerb beim Fahrenlernen" sollen Erkenntnisse zu einer verbesserten Fahranfängervorbereitung und zur Verringerung des Fahranfängerrisikos erarbeitet werden. In der vorliegenden Literaturstudie als erstem Projektteil wurde eine umfassende Analyse des internationalen Erkenntnistandes zum Fahrfertigkeitserwerb unter besonderer Berücksichtigung des Einflussfaktors Fahrerfahrung durchgeführt. Herangezogen wurden Forschungsbefunde zu Kompetenzdefiziten junger Fahrer und Fahranfänger, zum Vorgehen bei der Ausbildung und Fahrerlaubniserteilung sowie zu weiteren Trainingsmaßnahmen, die sich an Fahranfänger richten. Zur Identifikation von Risikofaktoren und Bestimmung von Kompetenzdefiziten von Fahranfängern und jungen Fahrern werden meist Unfallstatistiken und Vergleiche von Fahranfängern (Novizen) und mit fahrerfahrenen Fahrern (Experten) herangezogen. Das Forschungsvorgehen ist hauptsächlich themengeleitet (zum Beispiel Unfalltypen und "ursachen, situationale Bedingungen, Alkohol, Fahrverhalten, Risiko- und Gefahrenwahrnehmung) und methodisch durch querschnittliche Daten- beziehungsweise Erhebungsdesigns gekennzeichnet. Längsschnittstudien, die sich gezielt mit der Entwicklung von Fahrfertigkeiten befassen, sind in der Literatur kaum zu finden. Es zeigt sich insgesamt, dass zwar viel darüber bekannt ist, was Fahranfänger und junge Fahrer " vor allem nach dem Fahrerlaubniserwerb " nicht können, unklar ist bisher jedoch wie lange der Fahrfertigkeitserwerb tatsächlich andauert und in welchen zeitlichen Sequenzen einzelne Fertigkeiten erlernt werden. Im Zusammenhang mit der Vorbereitung von Fahranfängern wird national und international mit hohem Aufwand an Maßnahmen zur Senkung der hohen Unfallraten junger Fahrer gearbeitet. Es steht eine Vielzahl an Veröffentlichungen über die Gestaltung der Fahrausbildung und das Vorgehen bei der Fahrerlaubniserteilung zur Verfügung. Innerhalb und außerhalb Europas sind in diesem Bereich große Unterschiede festzustellen. Als genereller Trend ist in den letzten Jahren zu beobachten, dass in der Ausbildung lange Lernzeiten angestrebt werden, um eine möglichst umfassende Fahrkompetenz aufzubauen. Unterschiedliche Auffassungen bestehen vor allem zu folgenden Aspekten: (1) Ausbildungsdauer und zeitliche Sequenz der Ausbildungsabschnitte, (2) Anteil und Rolle des formalen Lernens, (3) Verhältnis von theoretischer und praktischer Ausbildung und (4) Art und Zeitpunkt der Erteilung von Fahrerlaubnisrechten. Diese Aspekte werden vor allem hinsichtlich ihrer Implikationen für den Fahrfertigkeitserwerb im Ausbildungsverlauf diskutiert. Weiterhin werden ausbildungsergänzende Maßnahmen für Fahranfänger angeboten, bei denen Formen des E-Learnings (computerbasierte, interaktive Lernprogramme und simulatorgestützte Trainings) und der personalen Instruktion (Aufbaukurse mit theoretischen und fahrpraktischen Lerneinheiten) zu nennen sind. Beispielhaft werden einige dieser ergänzenden Ausbildungsmaßnahmen vorgestellt und hinsichtlich ihrer Rolle im Prozess des Fertigkeitserwerbs diskutiert. Die umfangreiche Literatur zum Verhalten und zur Ausbildung junger Fahrer spiegelt die nachhaltigen Bemühungen zur Senkung der hohen Unfallrate junger Fahrer wider. Dennoch hat sich die Problemsituation bisher nur wenig geändert. Dies könnte mit dadurch bedingt sein, dass die Forschung sich bislang überwiegend mit der Frage nach dem "WAS" des Lernens und weniger mit der Frage nach dem "WANN" oder dem "WIE" beschäftigt hat. Die Aufgabe einer weiteren Studie zur Frage des Kompetenzerwerbs kann daher nicht sein, den vorhandenen Katalogen von notwendigen Kompetenzen einen weiteren hinzuzufügen, sondern einen Ansatz zu verfolgen, der den Lernprozess selbst thematisiert und empirisch überprüft. Ein entsprechender Ansatz wird vorgeschlagen.