As the number of roundabouts is steadily on the increase, a variety of types, applications and priority situations have emerged as a result. This development is at odds with the vision on Sustainable Safety (Duurzaam Veilig), whose very objectives are unambiguity and uniformity. The aim of this publication is, therefore, to formulate clear recommendations for the design and construction of single lane and two lane roundabouts on the basis of current applications and studies. A great deal of research has recently been conducted into the safety of roundabouts, the findings of which confirm the positive results from previous studies. One such finding was that the safety factor afforded by roundabouts was permanent in nature. In addition, roundabouts with cycle lanes were found to be relatively the least safe form of roundabout when car volumes exceeded 6,000 to 8,000 per direction, per 24 hours. The number of victims appears to be three to four times higher than on roundabouts with separate cycle paths. Still, they are safer than other types of junction. A comparative study has shown that situations where cyclists are given priority are on average less safe, particularly for mopeds. It was also found, however, that the danger in those situations is related to the design and location of the roundabout. Two lane roundabouts appear to be less safe than those with single lanes, but certainly no less safe than other solutions for traffic intersections.
Eenheid in Rotondes (Uniformity in Roundabouts)
1998
114 pages
Report
No indication
English
Transportation Safety , Road Transportation , Transportation , Transportation & Traffic Planning , Highway Engineering , Traffic circles , Traffic safety , Highway design , Intersections , Traffic flow , Highway planning , Highway transportation , Bicycle safety , Motor vehicles , Netherlands , Traffic management , Vehicular traffic control , Foreign technology , Roundabouts
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