Investigating Parameter Interactions with the Factorial Design Method: Webster's Optimal Cycle Length Model

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dc.contributor.authorAkgungor, Ali Payidar
dc.contributor.authorKorkmaz, Ersin
dc.date.accessioned2020-06-25T18:29:27Z
dc.date.available2020-06-25T18:29:27Z
dc.date.issued2018
dc.departmentKırıkkale Üniversitesi
dc.descriptionAKGUNGOR, ALI PAYIDAR/0000-0003-0669-5715
dc.description.abstractAccurate estimation of cycle length is an important factor in the performance of a signalized intersection. Cycle length is determined by employing some parameters such as arrival flow, number of phase, lost time etc., but each parameter has different effects on a cycle length model. If the effects of parameters and their interactions in the cycle length model are known, the performance of the model can be effectively increased. In this study, the sensitivity of optimal cycle length model proposed by Webster and its parameters were analysed with the factorial design method. The reason for selecting this model is that the model has still been used in signal timing practice and has lead many studies of researchers over 50 years. The evaluation of sensitivity analysis shows that while arrival flow as single parameter has a major effect on the optimal cycle length model, the remaining single parameters of the model (i.e., the number of phase in a cycle length, saturation flow and lost time) have secondary importance. Additionally, two parameter interactions of arrival flow-saturation flow have major effect on the model results. For three parameter interactions, the number of phase-arrival flow-saturation flow interaction has a slightly larger effect than the other three-parameter interactions. As a result, the factorial design method is an effective tool to determine the importance of the model parameters for researchers, and it can be employed to other traffic engineering applications.en_US
dc.identifier.citationAkgüngör, Ali & Korkmaz, Ersin. (2018). Investigating Parameter Interactions with the Factorial Design Method: Webster’s Optimal Cycle Length Model. Tehnicki Vjesnik. 25. 391-395.en_US
dc.identifier.doi10.17559/TV-20170908185847
dc.identifier.endpage395en_US
dc.identifier.issn1330-3651
dc.identifier.issn1848-6339
dc.identifier.scopus2-s2.0-85054130582
dc.identifier.scopusqualityQ3
dc.identifier.startpage391en_US
dc.identifier.urihttps://doi.org/10.17559/TV-20170908185847
dc.identifier.urihttps://hdl.handle.net/20.500.12587/7324
dc.identifier.volume25en_US
dc.identifier.wosWOS:000445262900020
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherUniv Osijek, Tech Facen_US
dc.relation.ispartofTehnicki Vjesnik-Technical Gazette
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectarrival flowen_US
dc.subjectfactorial design methoden_US
dc.subjectoptimal cycle lengthen_US
dc.subjectsensitivity analysisen_US
dc.subjectWebster modelen_US
dc.titleInvestigating Parameter Interactions with the Factorial Design Method: Webster's Optimal Cycle Length Modelen_US
dc.typeArticle

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