Abstract: The aim of this thesis is to measure the influence of individual and contextual socioeconomic factors in daily travel, traffic injury incidences and severity of injuries when it comes to young persons of under 25 years of age in France. Original analyses were made using the following databases: the Rhône road trauma Registry, the Lyon Household Travel Survey 2005-2006 (HTS) and an epidemiological case-control survey conducted during the thesis. Except for casualties of motorized two-wheeler crash incidences for the different categories of road users (motorists, cyclists, roller-skate users and pedestrians) were generally higher among the inhabitants of deprived municipalities. Depending on categories of road users huge gender differences were also observed. The effects of socioeconomic factors on injury severity, individual and contextual socioeconomic differences in the use of modes of transport (daily travel), car ownership and access to driver’s license were also studied. The case-control study allows the investigation to focus simultaneously on injuries, daily travel and intermediate-risk factors such as risk behaviors factors of young people. The recognition of social inequalities in daily travel and traffic injuries allow focusing prevention campaigns on the existence of higher risk areas and groups ; L’objectif de la thèse est de mesurer en France l’influence des inégalités socioéconomiques individuelles et contextuelles sur la mobilité, l’incidence et la gravité des accidents corporels chez les enfants et les jeunes de moins de 25 ans. Des analyses originales sont effectuées à partir des bases de données suivantes : le Registre des Victimes d’accidents corporels de la circulation du Rhône, l’enquête ménage déplacement (EMD) de 2005-06 et une enquête épidémiologique de type cas-témoins réalisée durant la thèse. Excepté pour les victimes à deux-roues à moteur les incidences d’accidents lors de l’usage des différents modes de transports (voiture, vélo, marche et rollers) sont plus élevées chez les habitants ...
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