Research has been conducted into three subjects that relate to the safety of Dutch roundabouts. The first subject concerns the development of safety in the long term. In this study the accident history of about 200 roundabouts examined in a previous study was expanded by the years 1992 up to 1994 inclusive. The second subject concerns the regulation of priority for cycle traffic on separate cycle paths around roundabouts. In follow-up to a study conducted in 1994, the road hazard on 17 roundabouts where cyclists have priority was compared with the road hazard on 62 roundabouts where cyclists do not have right of way. Attention is also paid to how the priority rule for cyclists influences the capacity of the roundabout for motorised traffic. The third subject relates to a change in the priority rule for existing roundabouts dating from before 1985. It is discussed, among other things, whether this change should be linked to a reconstruction of these roundabouts. For this purpose, accident studies' data and information obtained from road administrators and experts are used. See also IRRD 860401 and 873023.
Abstract