Powered two-wheelers riders’crash injury risk on urban arterial streets
Résumé
In recent years, the use of powered two-wheelers has experienced extraordinary growth in Europe, notably in densely population areas (CARE, 2012). Nevertheless, the powered two wheelers ‘crash risk is still very poorly documented. It is mainly due to a lack of available accurate exposure data about this road user category and its subcategories. Thus, powered two wheelers ‘accident risk is generally overall and roughly studied. Based on data held by the Police, a case-control study was conducted. The cases comprised 110 powered two-wheelers riders and 157 motorists involved in injury crashes occurred on nine arterial streets in the Marseille metropolitan area (France) from 1st January 2011 to 31st December 2011. The controls were powered two-wheelers riders and motorists who passed the crash sites at the same time of day and same day of week as when the crashes occurred. These controls were collected during periodic roadside surveys. Per kilometer travelled, powered two-wheelers have significantly greater chance of being involved in a crash than motorists (odds ratio 3.81, 95% confidence interval 2.97 to 4.89). Concerning the risk of being injured, powered two-wheelers riders are 22.3 times (95%confidence interval 13.7 to 36.3) more likely to be injured compared to motorists. Significant differences are found in these risks between mopeds and light motorcycles and heavy motorcycles riders. This study quantifies both the crash risk and risk of injury for different categories of powered two-wheelers (mopeds, light motorcycles and heavy motorcycles) and confirms that the over-representation of powered two-wheelers in accidents statistics in large metropolitan areas seems more due to their extreme vulnerability rather than their over-implication in collisions.
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