10. Međunarodna Konferencija „Bezbednost saobraćaja u lokalnoj zajednici“ Srbija, Kragujevac, Hotel Kragujevac, 22‐25. april 2015. 10 th International Conference ROAD SAFETY IN LOCAL COMMUNITY Serbia, Kragujevac, Hotel Kragujevac, April 22 – 25, 2015. COMPARISON OF DESIGN VARIANTS FOR ROUNDABOUT RECONSTRUCTION USING AHP METHOD – CASE STUDY Hrvoje Pilko 1 , Davor Brčić 2 , Danijela Barić 3 Abstract: Traffic intersections are considered to be the most complex and the most demanding points where several traffic streams intersect. The paper presents the reconstruction analysis of the large urban three-lane roundabout Jadranska Avenue - Dubrovnik Avenue located in the City of Zagreb (Croatia). The goal of this study is to find the optimal traffic-technical and urban solution in a scope of road safety using multi-criteria decision-making procedure. Current traffic conditions and problems regarding the capacity and road safety are presented. Three developed conceptual solutions have been also used and analysed. The collected data show the reasons why local municipality wants to bring the roundabout into the condition of efficient capacity and road safety. The present work describes applying the multi-criteria analytical hierarchy process (AHP) method to evaluate roundabout design variants through differential weighting of various criteria and subcriteria with emphasis on road safety. For solving the multi-criteria analysis the Expert Choice software package has been used. This approach may prove useful for evaluating and selecting appropriate roundabout designs for this and other contexts. Keywords: roundabout, road safety, design variants, analytic hierarchy process 1. INTRODUCTION Compared with traditional at-grade urban road intersections with or without traffic lights, appropriately dimensioned, designed and modelled roundabouts greatly increase the level of efficiency, i.e. the capacity and level of service [1,2]. From the economic standpoint, roundabouts bring numerous benefits: lower land purchase costs, lower cost 1 Ph.D., Pilko, Hrvoje, Department of Road Transport, Faculty of Transport and Traffic Sciences, University of Zagreb, Vukelićeva 4, Zagreb, Croatia, hrvoje.pilko@fpz.hr. 2 Ph.D., Associate professor, Davor Brčić, Department of Urban Transport, Faculty of Transport and Traffic Sciences, University of Zagreb, Vukelićeva 4, Zagreb, Croatia, davor.brcic@fpz.hr. 3 Ph.D., Assistant professor, Danijela Barić, Department of Road Transport, Faculty of Transport and Traffic Sciences, University of Zagreb, Vukelićeva 4, Zagreb, Croatia, danijela.baric@fpz.hr.