Intersections are critical points of the urban transport system according to various criteria such as capacity, safety, economic, ecological, etc. The reconstruction of the intersection affects various spatial and traffic aspects. Hence, the effects of the reconstruction need to be analyzed in the planning phase of design and analysis of alternative solutions. By applying microsimulation traffic modeling, it is possible to analyze the effects of the various solutions on existing and future traffic demand. In this paper, the traffic safety effects of the reconstruction of a selected urban intersection, where different horizontal discontinuities were applied, are analyzed. In addition to the functional indicators (vehicle delays, queue parameters), the effects of the reconstruction of conflict zones were analyzed through dynamic indicators (vehicle speeds of access routes). Vehicle speed has the greatest impact on the outcomes of traffic accidents in human-vehicle interaction. The analyses were done on the intersection located near an elementary school where potential child-vehicle collision can occur. In this paper, the existing intersection and three alternative reconstruction solutions were analyzed, using microsimulation traffic modeling for the measured traffic load and traffic increase of 100%, 150%, and 200%. Speeds on the major street were measured automatically for 24 hours. The morning peak hour, when children go to school, was chosen as relevant, when the traffic count was made for all traffic flows in the intersection by using a video camera. The optimal reconstruction solution was chosen by analyzing selected functional and dynamic indicators with the basic goal of increasing the traffic safety of pedestrian traffic flows.

reconstruction; urban intersection; microsimulations; pedestrian safety