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Authors

  • Gustavo Riente de Andrade Universidade de São Paulo
  • José Reynaldo Setti Universidade de São Paulo
  • Antônio Clóvis Pinto Ferraz Universidade de São Paulo

DOI:

https://doi.org/10.14295/transportes.v23i3.936

Keywords:

Highways, HCM, Volume-Delay Functions

Abstract

This paper identified in the literature and described the most commonly used delay functions in transportation demand modeling packages: (1) BPR; (2) Conical; (3) Akçelik function; and (4) Logit-Based. Then it was tested the compatibility between these four VDFs and the current HCM models, calibrated to Brazilian highways. As the main conclusions, it was observed that the best fits were obtained using the BPR and the Logit-Based Functions. On the other hand, the Conical and Akçelik functions should be used with caution, since they tend to underestimate the delay for low to moderate traffic flows, common in rural highways. Specifically with respect to two-lane highways, the Logit-Based function has proved to be of interest, because of its capability to reflect more severe delays for low traffic flows, while producing greater delays for congested conditions, which is a desirable characteristic in demand modeling.

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Author Biographies

Gustavo Riente de Andrade, Universidade de São Paulo

Doutorando pelo Departamento de Transportes da Escola de Engenharia de São Carlos

José Reynaldo Setti, Universidade de São Paulo

Professor Titular pelo Departamento de Transportes da Escola de Engenharia de São Carlos

Antônio Clóvis Pinto Ferraz, Universidade de São Paulo

Professor Titular pelo Departamento de Transportes da Escola de Engenharia de São Carlos

References

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Andrade, G. R.; Setti, J. R. (2014) Speed-Flow Relationship and Capacity for Expressways in Brazil. Transportation Research Circular, v. E-C190, p. 10–25. ISSN 0097-8515. Disponível em: <http://sites.poli.usp.br/d/ptr2377/14-1707setti.pdf>

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Published

2015-12-23

How to Cite

de Andrade, G. R., Setti, J. R., & Ferraz, A. C. P. (2015). . Transportes, 23(3), 81–89. https://doi.org/10.14295/transportes.v23i3.936

Issue

Vol. 23 No. 3 (2015)

Section

Articles

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