Influence of positioning of central rigid barriers in the visibility of design on two-lane highways

Authors

  • Érica Santos Matos Escola Politécnica da Universidade de São Paulo Departamento de Engenharia de Transportes
  • Ana Paula Camargo Larocca Escola de Engenharia de São Carlos da Universidade de São Paulo Departamento de Engenharia de Transportes
  • Felipe Issa Kabbach Jr Escola Politécnica da Universidade de São Paulo Departamento de Engenharia de Transportes

DOI:

https://doi.org/10.14295/transportes.v22i2.723

Keywords:

Stopping Sight Distance. Barrier. Highway Geometric Design.

Abstract

Stopping Sight Distance must be guaranteed throughout of a highway for safety reasons. However, cross section elements can become obstructions which interfere on design sight distances. This occurs when barriers are used instead of medians on bidirectional highways, especially along left curves. Therefore, this paper analyzes the barriers placement on hypothetical scenarios using three-dimensional graphics simulations. The lateral offset of the barrier in relation to the roadway was defined according to each design speed and each radius of the horizontal curve analysis. The diagrams created have potential use to definition of indicators for making decisions about the project, because the project was considered as a three-dimensional model as a whole rather than analyzing separately the horizontal and vertical alignments and cross sections.

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Published

2014-05-24

How to Cite

Matos, Érica S., Larocca, A. P. C., & Kabbach Jr, F. I. (2014). Influence of positioning of central rigid barriers in the visibility of design on two-lane highways. Transportes, 22(2), 23–33. https://doi.org/10.14295/transportes.v22i2.723

Issue

Vol. 22 No. 2 (2014)

Section

Artigos

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