Three-Dimensional Virtual Highway Model for Sight-Distance Evaluation of Highway Underpasses

Santos Berbel, César de and Castro Malpica, María (2018). Three-Dimensional Virtual Highway Model for Sight-Distance Evaluation of Highway Underpasses. "Journal of Surveying Engineering", v. 144 (n. 4); pp. 1-10. ISSN 1943-5428. https://doi.org/10.1061/(ASCE)SU.1943-5428.0000258.

Description

Title: Three-Dimensional Virtual Highway Model for Sight-Distance Evaluation of Highway Underpasses
Author/s:
  • Santos Berbel, César de
  • Castro Malpica, María
Item Type: Article
Título de Revista/Publicación: Journal of Surveying Engineering
Date: 20 July 2018
ISSN: 1943-5428
Volume: 144
Subjects:
Freetext Keywords: Three-dimensional (3D) Modeling, Geometric Design, Geographic Information System, Highways, Light Detection and Ranging (LiDAR), Road Safety
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

When it comes to the safe design and operation of highways, sight distance is of utmost importance. The estimation of sight distance must be performed taking the three-dimensional (3D) nature of roadways and related features into account. Horizontal curves and crest vertical curves were the common sight restrictions considered in highway design. However, overhanging features may also affect sight distance. This paper presents a 3D virtual model for evaluating sight distance on sites where overpass structures restrict sight distance and for detecting sight-distance-related issues. The procedure and inputs for the computation of sight distance are described as are the results, which were validated and applied to a case study of an in-service highway underpass. Stopping sight distance and passing sight distance were evaluated for a section of highway with specific sight-distance characteristics of overpasses. The effect of the observer and target heights on sight distance for underpasses proved the opposite of those on horizontal curves and crests. Near an overpass, the heights should be switched from those used on curves and crests to evaluate stopping and passing sight distance according to operational and safety criteria. Finally, the currently existing passing zones were evaluated by means of the results obtained, revealing possible deficiencies in the establishment of passing zones.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTRA2015-63579-RUnspecifiedUnspecifiedNuevas tecnologías geoespaciales para estudios de seguridad vial

More information

Item ID: 53010
DC Identifier: http://oa.upm.es/53010/
OAI Identifier: oai:oa.upm.es:53010
DOI: 10.1061/(ASCE)SU.1943-5428.0000258
Official URL: https://ascelibrary.org/doi/10.1061/%28ASCE%29SU.1943-5428.0000258
Deposited by: Memoria Investigacion
Deposited on: 21 Nov 2018 13:30
Last Modified: 21 Nov 2018 13:30
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