The lack of traffic supply on the main roads in the Zadar district of Belafuža has been noticed. The first step taken with the purpose of solving the lack of traffic supply was an analysis of the existing situation. Aforementioned analysis contains an analysis of the traffic infrastructure, safety, and traffic flows. Analysis showed the necessity to rebuild the traffic infrastructure and to put new regulation of traffic flows. An essential element in the analysis of traffic flows is traffic counting that has taken place in the high season and low season. A conceptual solution to the main roads in district of Belafuža has been designed, based on the results of the analysis. The proposed solution includes the construction of two roundabouts with capacity of 20,000 vehicles per day, with the conversion of three two-way streets into three one-way streets. The new traffic solution will reduce waiting times on the side driveways, prevent prohibited turns of vehicles across the solid white line, increase the level of service, traffic flow and vehicle security, due to reduction of traffic conflicts and speed in the intersection. It will also solve the problematic lack of sidewalks for safe separation of pedestrians from motorized traffic. The proposed solution has been compared with the traffic light solution from an existing traffic-technical project that covers the northern part of the area. The results of the estimate show that the solution proposed in this thesis provides a more favourable option. The proposed solution has been tested and simulated using a microsimulation tool PTV Vissim. A cost analysis that gives a detailed expense of the planning and construction process has also been made.