Visibility study in urban intersections no traffic lights in the city Maringá - Paraná

Abstract

Intersections are one of the mais elements of the road system in cities, deserving considerable attention in their design and implementation, since they present a high concentration of points of conflict between the different types of vehicles and between vehicles and people, translates into regions with a high number of accidents. In this way, the driver's vision must be clear, in order to enable the visualization of these possible conflicts and safer decision-making. In this sense, the objective of this article is to create an easy-to-use tool, based on a method for determining the visibility distance in urban intersections without traffic lights, which takes into account the trinomial space-time-speed, applying results obtained in intersections that had a high number of accidents in the last two years, 2020 and 2021, in the city of Maringá, Paraná. The methodology was based on the determination of equations for calculating the visibility distance at intersections with ''Stop'' and ''Give Preference'' traffic control, transforming these results into a visual tool, like abacuses. The developed tool is capable of enabling the determination of the visibility distance in both cases from simple visualization, taking into account the parameters of vehicles and roads commonly found in the country.

Keywords: Crossroads. Visibility triangle. Stop. Give Preference. Abacus.