Converting an intersection into a roundabout improves motor vehicle safety, but a similar safety effect is not found for car-bicycle collisions. Very little is known about the reasons behind these collisions. In this study a first step towards an understanding of the reasons behind these collisions is taken. The study focuses on cyclists' perceived risk in specific situations, factors influencing the perception of risk and cyclists' knowledge about traffic rules regulating the interaction between road users in roundabouts. One thousand and nineteen cyclists aged 18-85 participated in the study. Data were collected using structured interviews conducted in five Danish roundabouts. Underestimation of risk and lack of knowledge about relevant traffic rules may contribute to car-bicycle collisions in roundabouts. Cyclists prefer road designs with a clear regulation of road user behaviour. A need to increase knowledge about traffic rules regulating road user behaviour in roundabouts is identified. (A) Reprinted with permission from Elsevier.
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