Análise de sensibilidade dos parâmetros de calibração do microssimulador vissim na representação da frequência e localização de conflitos veiculares longitudinais

Abstract

This paper proposes a sensitivity analysis of car-following parameters used in VISSIM, regarding the representation of traffic conflicts in a simulated network. The parameters of the Wiedemann- W74 model were studied and then established a reasonable range of values (high and low levels) to be applied in the simulations. A network was established based on an urban arterial corridor of Fortaleza, a stretch of Barão de Studart Avenue between the avenues Antônio Sales and João Carvalho. The trajectory of files were extracted from VISSIM and, with the use of the software SSAM, we obtained the number and the coordinates of recorded traffic conflicts. Through statistical analysis, it was possible to evaluate the sensitivity of W74 parameters in representing road conflicts.