Incorporating Uncertainty into the Estimation of the Passing Sight Distance Requirements

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dc.contributor.author El Khoury, John
dc.contributor.author Hobeika, Antoine
dc.date.accessioned 2016-02-16T13:14:36Z
dc.date.available 2016-02-16T13:14:36Z
dc.date.copyright 2007
dc.date.issued 2016-02-16
dc.identifier.issn 1093-9687 en_US
dc.identifier.uri http://hdl.handle.net/10725/3096
dc.description.abstract Passing sight distance (PSD) is provided to ensure the safety of passing maneuvers on two lane two way roads. Many random variables determine the minimum length required for a safe passing maneuver. Current PSD design practices replace these random variables by single-value means in the calculation process, disregarding their inherent variations, which results in a single-value PSD design criteria. The main objective of the article is to derive a PSD distribution that accounts for the variations in the contributing random variables. Two models are devised, a Monte-Carlo simulation model used to obtain the PSD distribution and a closed form analytical estimation model used for verification purposes. The Monte-Carlo simulation model uses random sampling to select the values of the contributing parameters from their corresponding distributions in each run. The analytical model accounts for each parameter variation by using their means and standard deviations in a closed form estimation method. The means and standard deviations of the PSD using both models are compared for verification purposes. Both models use the same PSD formulation. The analysis is conducted for a design speed of 80 Km/h (50 mph). A PSD distribution is developed accordingly. The results of both models differ only by less than 2%. The obtained distribution is used to estimate the reliability index of the current PSD standards at a design speed of 80 Km/h (50 mph). en_US
dc.language.iso en en_US
dc.title Incorporating Uncertainty into the Estimation of the Passing Sight Distance Requirements en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 200103005 en_US
dc.author.woa N/A en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Computer-Aided Civil and Infrastructure Engineering en_US
dc.journal.volume 22 en_US
dc.journal.issue 5 en_US
dc.article.pages 347-357 en_US
dc.identifier.doi http://dx.doi.org/10.1111/j.1467-8667.2007.00491.x en_US
dc.identifier.ctation Khoury, J. E., & Hobeika, A. (2007). Incorporating uncertainty into the estimation of the passing sight distance requirements. Computer‐Aided Civil and Infrastructure Engineering, 22(5), 347-357. en_US
dc.author.email john.khoury@lau.edu.lb
dc.identifier.url http://onlinelibrary.wiley.com/doi/10.1111/j.1467-8667.2007.00491.x/full

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