At the request of the South-Eastern Region of the Swedish Road Administration, VTI has evaluated the effect of a roundabout with a painted traffic island. The island was painted so that it appeared three dimensional. Safety was studied, as well as accessibility and behaviour. The intersection is situated in the central place in Söderköping Municipality. It is a fourway intersection, with Östra Rydsvägen as the primary road and Ringvägen as the secondary road. Before construction of the roundabout, motor vehicles on Ringvägen had to give way to traffic on Östra Rydsvägen. The spot speeds of motor vehicles were measured near the intersection and at points ca 100 m from the intersection. With a programme developed by VTI, based on information from the spot speed measurements, changes in trip times were studied. The intersection was video filmed daily before and after construction, between 6.30 and 18.30 hours. The videoed material was used as the basis in judging the safety effect, accessibility for pedestrians and cyclists, and for the behavioural study.