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Comparison of Thoracic Injury Risk in Frontal Car Crashes for Occupant Restrained without Belt Load Limiters and Those Restrained with 6 kN and 4 kN Belt Load Limiters

J-Y. Foret-Bruno, X. Trosseille, Y. Page, J-F Huère, J-Y. Le Coz, J-C Coltat
CEESAR-T. Phalempin, D. Villeforceix, P. Baudrit, H. Guillemot
Published 2001-11-01 by The Stapp Association in United States
In France, as in other countries, accident research studies show that a large proportion of restrained occupants who sustain severe or fatal injuries are involved in frontal impacts (65% and 50%, respectively). In severe frontal impacts with restrained occupants and where intrusion is not preponderant, the oldest occupants very often sustain severe thoracic injuries due to the conventional seat belt. As we have been observing over the last years, we will expect in the coming years developments which include more solidly-built cars, as offset crash test procedures are widely used to evaluate the passive safety of production vehicles. The reduction of intrusion for the most severe frontal impacts, through optimization of car deformation, usually translates into an increase in restraint forces and hence thoracic injury risk with a conventional retractor seat belt for a given impact severity. It is, therefore essential to limit the restraint forces exerted by the seat belt on the thorax in order to reduce the number of road casualties.In order to address thoracic injury risk in frontal impact, Renault cars have…
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Centre Européen d’Etudes de Sécurité et d’Analyse des Risques, France-M.C. Simon, P. Botto
Laboratoire d’Accidentologie, de Biomécanique et d’Etude du Comportement Humain, PSA PEUGEOT CITROËN RENAULT, France-Y. Page
  • Technical Paper
  • 2001-06-0193
Published 2001-06-04 by National Highway Traffic Safety Administration in United States
In recent years, throughout Europe, truck manufacturers have developed and installed occupant restraint systems similar to those that have been available in passenger vehicles for a long time. The development of truck seatbelts and steering-wheel mounted airbags is based on occupant safety research, and the need to meet European safety regulations which will come into effect in the near future. This paper aims to evaluate the potential efficiency of a seat belt coupled to an airbag. The study is based on the CEESAR truck accidents database. The sample includes 403 accidents which involved 479 unbelted occupants (all injury level). The injury causation mechanism according to the type and the severity of the crash enable us an effectiveness evaluation based on a supposed 100 % seat belt (and air bag) use rate. The use of seat belts with 3 anchoring points mounted on the seat of trucks (with an airbag) would be effective for 37 % of fatalities, 36 % of seriously injured and 22 % of slightly injured occupants.