Importância da geometria, da sinalização e das condições de superfície nas rodovias do Brasil – análise de segmentos críticos da malha rodoviária de Sergipe

• Autor(a) principal: Gortaire, Camila Andrade
• Data de Publicação: 2022
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFS
• Texto Completo: http://ri.ufs.br/jspui/handle/riufs/16298
• topic: Engenharia civil; Ensino de engenharia civil; Transporte rodoviário; Rodovias; Geometria; Sinalização; Pavimento de rodovias; Infra-estruturas rodoviárias; Confederação Nacional do Transporte; Road transportation; Highways; Geometry; Signage; Pavement; ENGENHARIAS::ENGENHARIA CIVIL::INFRA-ESTRUTURA DE TRANSPORTES::RODOVIAS; PROJETO E CONSTRUCAO

According to the National Transport Confederation (2021), in Brazil, road transportation concentrates around 65% of cargo and 95% of passengers; in Sergipe, highways handle 88% of total cargo. This demonstrates that the quality of the highways affects Brazilian economic activity. Not only that, but the quality of the highways also directly interferes with drivers' working conditions, the durability of vehicle components, fuel consumption, travel time, and accident risks. Therefore, to satisfy the expected traffic flow with comfort and safety, roads must follow parameters related to geometry, signage, and pavement surface conditions. The present study aims to analyze the geometry, signaling and surface conditions of critical segments of Sergipe's highways in terms of restrictions to the comfort and safety of vehicles and their users. 13 deficient points on the state's road network were identified and characterized. To achieve this result, questionnaires were applied to technicians from the State Department of Road Infrastructure of Sergipe and technical visits were carried out. Several problems were notified, such as insufficiency and poor condition of the roadsides, predominant absence of super width, discomfort concerning the radius of horizontal curves and visibility, unsatisfactory rolling conditions, and discomfort due to objects very close to the roadway. In the state capital, Aracaju, some problems observed were the inversion of the superelevation and the narrowing of the roadway. Finally, possible interventions were evaluated and proposed aiming at correting or reducing the deficiencies found, such as: implantation and adequacy of road signaling, adequacy of the curve radius, construction of a 3rd lane, implantation of speed reducers, increase in the width of the highway, adequacy of roadside conditions, implantation of fenders and pavement restoration.