Reliability-based analysis of sight distance modelling for traffic safety

Santos Berbel, César de and Essa, Mohamed and Sayed, Tarek and Castro Malpica, María (2017). Reliability-based analysis of sight distance modelling for traffic safety. "Journal of Advanced Transportation", v. 2017 ; pp. 1-12. ISSN 0197-6729. https://doi.org/10.1155/2017/5612849.

Description

Title: Reliability-based analysis of sight distance modelling for traffic safety
Author/s:
  • Santos Berbel, César de
  • Essa, Mohamed
  • Sayed, Tarek
  • Castro Malpica, María
Item Type: Article
Título de Revista/Publicación: Journal of Advanced Transportation
Date: May 2017
ISSN: 0197-6729
Volume: 2017
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Transporte y Territorio
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Sight distance is of the utmost importance for traffic safety. The consideration of three-dimensional (3D) available sight distance (ASD) in geometric design has been supported by several researchers. However, existing ASD estimation methods are two-dimensional (2D) in nature, which do not evaluate varying visibility conditions. This paper compares different methodologies of modelling the ASD. The ASD of 402 horizontal curves, located in twelve in-service two-lane rural highways, was analyzed. Three ASD estimation methods were used which include a 2D method and two different 3D methods. The ASD results obtained through 2D and 3D methodologies are compared. Also, the different conditions of the existing roadside features or geometric elements, under which the 3D ASD estimation is important, were identified. Next, reliability theory is utilized to evaluate the risk level (probability of noncompliance, Pnc) associated with limited sight distance for each ASD modelling method. The results of the comparison emphasized the importance of considering the 3D modelled sight distance when evaluating the associated risk either in highway design or during the service life. In addition, the results indicated that the ASD modelling approach can have a significant impact on the estimation of the safety of highway design.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTRA2015-63579-RUnspecifiedMaría Castro MalpicaNuevas tecnologías geoespaciales para estudios de seguridad vial

More information

Item ID: 48378
DC Identifier: http://oa.upm.es/48378/
OAI Identifier: oai:oa.upm.es:48378
DOI: 10.1155/2017/5612849
Official URL: https://www.hindawi.com/journals/jat/2017/5612849/
Deposited by: Memoria Investigacion
Deposited on: 17 Nov 2017 15:39
Last Modified: 20 Nov 2017 14:01
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