Influência dos parâmetros geométricos de rodovias na frequência e severidade de acidentes viários em curvas: o caso da BR 116
DOI:
https://doi.org/10.14295/transportes.v27i3.1997Keywords:
Road Safety, Geometric Reconstitution, Geometric Parameters, Negative Binomial, Ordered Logit.Abstract
Given the need to provide safer roads to users, this paper sought to identify the impact of geometrical parameters on the frequency and severity of accidents on curves in two-lane highway. This analysis was carried out on 225 kilometers (circa 140 miles) of BR 116 two-lane highway stretches in the state of Rio Grande do Sul. Road geometrical reconstruction made possible the build of 2007-2016 registered accidents characteristics database by Federal Highway Police (PRF) and the geometrical parameters, allowing accidents frequency and severity modeling through these parameters. Two econometric models were estimated: (i) negative binomial (NB) for frequency modeling; and (ii) ordered logit (OL) for accidents' severity. The results show that the increase in downward slope and superelevations contribute to the increase of accidents' frequency, though these helped on reducing its severity.Downloads
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