Relatório de diagnóstico técnico da rede de iluminação pública: análise de recorte urbano da Av. Afonso Pena, Belo Horizonte

Abstract

This study conducted a technical and critical analysis of the quality of public lighting along a section of Afonso Pena Avenue in Belo Horizonte, considering lighting performance, urban safety, and sustainability criteria. The research is based on the parameters of ABNT NBR 5101:2024 standard and included field measurements using a digital lux meter and computer simulations using DIALux 5.1 software. The methodology adopted involved the normative classification of roads and sidewalks, assessment of average horizontal illuminance and light uniformity, as well as verification of the color rendering index (CRI) and correlated color temperature (CCT). The study focused on the urban segment between Curitiba/Caetés Streets and the intersection with Guajajaras Street, encompassing areas of symbolic, scenic, and historical value to the city. The results revealed significant contrasts between the normative parameters and the actual public lighting installations. Although some modernization of the system is observed, with the use of LED lighting fixtures and illuminance levels compatible with the regulations in many sections, overlighting points were identified on sidewalks and poor uniformity along the streets, especially in transition areas and intersections. These inconsistencies negatively impact system performance, safety, visual comfort, and the urban ambiance. The results indicate that the installed system requires greater technical refinement in terms of sizing and light distribution. The analyses do not disqualify the investments made to retrofit the public lighting system; however, they offer technical support for future improvements to these systems to increase regulatory compliance and respect the historical and functional value of Avenida Afonso Pena as a symbolic space of intense public use.