Analysis of the functional efficiency of small town arterial thoroughfare (Case Study of Našice Town)

Abstract

The main factors that affect the choice of the intersection type when constructing a new or reconstructing an existing intersection are desired traffic flow rate and achievable traffic safety. At the same time, a significant challenge is to find optimal solutions for (re)construction and traffic organization at intersections in settlements, especially in agglomeration centers, due to their specific and, in most cases substantial, spatial and traffic constraints. This paper presents the examination of the functional efficiency of the introduction of roundabouts in the road network of Našice Town. As the location for the analysis, a section of county road 4168 is selected, which includes two consecutive 4-legged signalized intersections. For the purpose of the investigation presented in this paper, these signalized intersections are to be substituted with two single lane roundabouts. Conceptual design of these roundabouts includes prescribed performance checks: swept path analysis, speed and visibility checks. Finally, the rating of the analyzed road corridor functional efficiency and dynamics of intersections reconstruction is given based on the defined levels of service for the current state and the intersection reconstruction proposals.