Identificação e análise de trechos viários com possíveis inconsistências geométricas usando RPAS e receptor GNSS: estudo de caso da BR-101 km 113 ao km 115

Abstract

This paper sought to identify and analyze a road section with possible geometric issues. The identification was made based in the Federal Highway Police accident database and an adapted methodology of Ministério de Transporte's "PARE" program, using the Standard Unit of Severity (UPS) and filtering the types of accidents that may have originated due to issues on the geometric design of highway, such as: (i) overturning, (ii) collision with moving object, (iii) collision with static object, (iv) rear collision, (v) carriageway exit and (vi) tipping. This procedure provided the section between the kilometers 113 and 115 of BR-101. For the analysis of this highway's section it was necessary to survey the road geometric design characteristics, made by the use of two tools: (i) the Global Navigation Satellite System (GNSS) receiver, used in the modes of Precise Point Positioning (PPP) and Real-Time Kinematic Positioning (RTK), and (ii) the Unmanned Aerial Vehicle (UAV), based on the ground control points. The data obtained in the survey were processed in the Agisoft Metashape software, which generated a cartographic product with a 1:1000 scale category "B", according to the Cartographic Accuracy Standard – Digital Cartography Products (PEC-PCD). Through the cartographic product and the softwares AutoCAD Civil 3D and SAEPRO, it was made the analisis of the highway's geometric design, where parameters were found outside the criteria established by DNIT, such as: (i) inconsistencies in the width of the carriageway, (ii) sections of shoulder stretches with less than expected width according to standard minimum width, (iii) a road curve with less than expected radius according to standard minimum radius wich consider an operating speed of 60 km/h, (iv) a road section with a larger than standard slope that stretches for a long distance (1.2 km), and (v) many successive curves at Zone IV, in other words, not recommendable from the point of view of comfort for drivers. Therefore, it was possible to utilize the methodology proposed in this writing to map road segments with geometric design issues.