After analysis in the Ulubey roundabout, It was understanded that the existing state was unsufficient and the capacity was not used efficiently. It was also seen that the tailback length has been reached at almost 150-200 meters. In the context of our project, the type of intersection has been changed, circulation plans renewed, a new layby has been created to prevent the intersection of vehicles. Thus, circulation has been safer and faster than the previous state. The total time which is passed in the intersection point decreased by re
planning the signalization-phase diagrams.