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Institut
Nutzfahrzeuge der Kategorie N1 sind Fahrzeuge mit einem maximalen zulässigen Gesamtgewicht (zGG) bis zu 3500 kg. Da für diese Fahrzeuge keine Geschwindigkeitsbegrenzung und Fahrzeiterfassung vorgeschrieben ist, sind diese Fahrzeuge sehr häufig in Unfälle involviert. Durch den großen Laderaum und die hierdurch mögliche hohe Schwerpunktlage sind die Fahrer hinsichtlich der Adaption an die Beladungszustände häufig überfordert. Um den Einfluss der Fahrdynamikregelung auf die Sicherheit von N1 Fahrzeugen aufzuzeigen wurden standardisierte Fahrmanöver mit und ohne ESP bei unterschiedlichen Beladungszuständen durchgeführt. Hierfür wurde ein Fahrzeug mit einer Stütz- und Beladungsvorrichtung sowie mit der notwendigen Sensorik zur Erfassung fahrdynamischer Kennwerte und der Bremsdrücke ausgestattet. Die Auswertung der fahrdynamischen Kenngrößen zeigte deutlich den Beladungseinfluss auf die Fahrdynamik und die Minimierung dieses Einflusses durch ein ESP System mit der Mehrwertfunktion Load Adaptiv Control. Da N1-Fahrzeuge häufig auch von wenig erfahrenen Fahrern, z. B. Ferienjobs, im Straßenverkehr bewegt werden, sollten im Rahmen dieser Studie auch Fahrversuche mit ungeübten Probanden am Fahrsimulator berücksichtigt werden, um das Sicherheitspotential des ESP für die normale Fahrerpopulation aufzuzeigen. Hierzu wurde ein echtzeitfähiges Simulationsmodell eines Sprinters in CarSim erstellt und mit den Ergebnissen der Realfahrten validiert. Die Versuche am Fahrsimulator sollten das Sicherheitspotential des ESP bei der durchschnittlichen Fahrerpopulation aufzeigen. Hierzu wurden sowohl die im Realversuch durchgeführten standardisierten Fahrmanöver als auch Szenarien wie Ausweichmanöver, Teststreckenfahrt etc. nachgebildet. Insbesondere bei plötzlich auftauchenden Hindernissen hat sich der Vorteil des ESP deutlich gezeigt. Auch die Vorteile der Lasterkennung für das Regelverhalten des ESP wurde nachgewiesen.
The Powered Two Wheelers (PTWs) accidents constitute one of the road safety targets in Europe. PTWs users' fatalities represent 15% of EU road fatalities, having increased the last few years, which is quite opposite than other road users casualties. To reduce PTW accidents is necessary to know which the accident causations are from different points of view (human factor, vehicle characteristics, environment, type of accident, situation, etc.). In TRACE project ("Traffic Accident Causation in Europe", under the European Commission 6th Framework Program, 2006-2008,) a specific task was focused on PTW users point of view, analyzing extensive databases to locate the main accident configurations (type of accident, severity, frequency), and an in-depth database to obtain the causation factors, the risk factors for each configuration founded in the extensive databases analysis and the variables associated to each causation factor in the PTW configurations.
Powered Two Wheelers (PTWs) accidents constitute one of the road safety problems in Europe. PTWs fatalities represent 22% at EU level in 2006, having increased during last years, representing an opposite trend compared to other road users" figures. In order to reduce these figures it is necessary to investigate the accident causation mechanisms from different points of view (e.g.: human factor, vehicle characteristics, influence of the environment, type of accident). SAFERIDER project ("Advanced telematics for enhancing the SAFEty and comfort of motorcycle RIDERs", under the European Commission "7th Framework Program") has investigated PTW accident mechanisms through literature review and statistical analyses of National and In-depth accident databases; detecting and describing all the possible PTW's accident configurations where the implementation of ADAS (Advanced Driver Assistance Systems) and IVIS (In-Vehicle Information Systems) could contribute to avoid an accident or mitigate its severity. DIANA, the Spanish in-depth database developed by CIDAUT, has been analyzed for that purpose. DIANA comprises of accident investigation teams, in close cooperation with police forces, medical services, forensic surgeons, garages and scrap yards. An important innovation is the fact that before injured people arrive to hospitals, photographs and explanations about the possible accident injury mechanisms are sent to the respective hospitals (via 3G GPRS technology). By this, additional information to medical staff can be provided in order to predict in advance possible internal injuries and select the best medical treatment. This methodology is presented in this paper. On the other hand, the main results (corresponding to road, rider and PTW characteristics; pre and post-accident manoeuvres; road layout; rider behaviour; impact points; accident causations;...) from the analyses of the PTW accidents used for SAFERIDER are shown. Only accident types relevant to ADAS and IVIS devices have been considered.
The purpose of this work is to investigate the association between the injuries in motorcycle accident and the main accident configurations. The data were provided by a multicentric case-control study MAIDS regarding the risk of crash and injuries of motorcyclists. Chi-square test was used to evaluate the relationship between the variables and a logistic regression was performed to evaluate the association of injury severity with some variables supposed to be predictive factors. Lesive patterns characterized by internal haemorrhages are mainly associated with fronto-lateral crashes, above all in urban areas. Lacerations or abrasions, mainly reported in torso and lower extremities, are mostly associated with single crashes or accidents in queue also for crashes occurred to low speed (< 50 km/h). The severity of injuries is highly associated with impact speed, regardless of the crash configuration. Fractures and haemorrhages play an important role in determining the severity of injuries. The upper extremities are the most frequently traumatised anatomic areas.
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.
Nowadays, traffic accidents are recorded in historical databases. Regarding the huge quantity of data, the use of data mining tools is essential to help Experts, for automatically extracting relevant information in order to establish and quantify relations between severity and potential factors of accidents. An innovative approach is here proposed for an in depth investigation of real world accidents data base. Mutual information ratio based on conditional entropies is used to quantity the association strength between an accident outcome descriptor (injury severity) and other potential association factors. Information theoretic methods help to select automatically groups of factors mostly responsible of the severity of accident.
This study aims to analyze spine injuries in motor vehicle accidents. Between 1985 and 2004 the Hannover accident research unit documented 18353 accidents. We identified 161 front passengers (0.53%) with cervical spine injuries, 84 (0.28%) with thoracic and 95 (0.31%) with lumbar injuries. Technical and medical data was reviewed. Patients" records were retrieved. X-rays were evaluated and fractures were classified according to the Magerl classification. 68% and 57% of thoracic and lumbar fractures occurred in accidents with multiple impacts. Delta-v was 50, 40 and 40 kph in passengers with cervical, thoracic and lumbar spine, resp. Passengers with spinal fractures frequently showed numerous concomitant injuries, e.g. additional vertebral fractures. The influence of seat belts and airbags is discussed. Patient work-up has to include a thorough investigation for additional injuries.
Das Projekt stellte auf Grundlage des aktuellen Forschungsstandes heraus, welche Bedeutung die visuelle Orientierung für die Wahrnehmung und Verhaltenssteuerung beim Führen von Kraftfahrzeugen sowie die Entwicklung des Fahrens als Routinetätigkeit hat und welche Potentiale zu einer möglichen Förderung dieser Fähigkeit bestehen können. Darüber hinaus wurden geeignete Indikatoren zur Diagnose visueller Orientierungsleistungen ermittelt und Rahmenbedingungen für eine Implementierung von Trainingsmöglichkeiten in Lehr-/Lernsettings zur Förderung der visuellen Orientierungsleistung von Fahranfängern abgeschätzt. Es ergeben sich unter Berücksichtigung der neuesten Standards in der Blickbewegungsforschung eine Reihe von Indikatoren, die zur Diagnose visueller Orientierungsleistung im Verkehr und zur Erfassung von Kompetenzentwicklung als geeignet einzuschätzen sind. Zu nennen sind in diesem Zusammenhang Fixationsverteilungen, objektbezogene Blickdauern, Blickabwendungen von der Straße, differenzierte Maße der Reaktionszeit in Gefahrensituationen sowie Indikatoren bezüglich des Situationsbewusstseins. Es wurden Ansatzpunkte für die Entwicklung von Konzepten zur Verbesserung der visuellen Orientierungsleistungen bei Fahranfängern identifiziert. Dazu gehören zum einen Maßnahmen, welche eine indirekte Beeinflussung der visuellen Orientierung durch kognitive Trainings hervorrufen können (zum Beispiel ein Training der Gefahrenkognition, wie es im australischen Fahrausbildungssystem mittels des Hazard-perception-Test durchgeführt wird), zum anderen ein Training mittels direkter Anweisungen (zum Beispiel sollten Anweisungen zur vermehrten und vor allem kommentierenden Rückspiegel- und Schulterblicknutzung zur Sicherstellung der Informationsverarbeitung gegeben werden). Diese Ansatzpunkte stehen für die Entwicklung und empirische Überprüfung konkreter Curricula in entsprechenden Anschlussprojekten zur Verfügung. Zusammenfassend lässt sich feststellen, dass sehr wohl einige Maßnahmen das Potential versprechen, die visuelle Orientierungsleistung von Fahranfängern deutlich zu verbessern. Hier empfiehlt es sich, in die Fahrausbildung eine Kombination aus indirekten kognitiven Trainings und direkten Anweisungen zu implementieren.
A lot of factors are related to a road traffic accident; particularly human factors such as road use characteristic, driving maneuver characteristic and safety attitude are the major ones. As a random factor is also included, so it is necessary to minimize the contribution of a random factor to identify human factors related to a road traffic accident. There are several standpoints for traffic accident analysis, such as vehicle-based, location-based and driver-based. And it is effective to analyze driver-based traffic accident data for discussion on the relation between human factors and accidents. An integrated traffic accident database system was developed for analysis considering driver- accident and violation records by ITARD, and several studies were carried out for the evaluation. Useful data for discussion on the relation between types of collision and traffic violations, and the effect of accident experience to the following accident were obtained.
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.