Abstract
How sustainably safe is the layout of Dutch roads? Questionnaire study among road authorities. At the beginning of 2009, a questionnaire study was held among Dutch road authorities to obtain a better insight in the layout of Dutch roads and intersections. In this questionnaire questions were asked about the speed limits that are used and about relevant layout features of access roads, distributor roads, and regional through roads. Other questions asked which intersection types are used for intersections of different road categories. The road authorities' answers were used to determine the extent to which the road layout conforms to the preferred layout according to Sustainable Safety.