VISIBILITY STUDY IN URBAN INTERSECTIONS WITH NO TRAFFIC LIGHTS IN THECITY OF MARINGA, PARANÁ

Resumo

Intersections are a key part of city road systems, requiring careful design and implementation because they have many conflict points between different vehicle types and pedestrians. These areas are often linked to high accident rates. Therefore, drivers' main elements on urban roads need careful attention during design, as they involve numerous conflict points that require clear vision for safe decision-making. This article aims to develop a user- friendly tool based on a method to determine visibility distance at urban intersections without traffic lights. It considers the space-time-speed relationship, applying findings from intersections in Maringa, Paraná, that experienced many accidents in 2020 and 2021. The methodology includes deriving equations to calculate visibility distances at intersections with ‘Stop' and ‘Give Preference’ traffic controls, and transforming these into a visual aid, like an abacus. The tool allows for quick determination of visibility distance by visual inspection, accounting for common vehicle and road parameters in the country.

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