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Evaluation of Service Reliability Impacts of Traffic Signal Priority Strategies for Bus Transit

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dc.contributor.authorChang, Jamesen
dc.contributor.committeechairCollura, Johnen
dc.contributor.committeememberTignor, Samuel C.en
dc.contributor.committeememberDion, Francoisen
dc.contributor.committeememberRakha, Hesham A.en
dc.contributor.committeememberTriantis, Konstantinos P.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T20:17:38Zen
dc.date.adate2002-12-13en
dc.date.available2014-03-14T20:17:38Zen
dc.date.issued2002-06-03en
dc.date.rdate2003-12-13en
dc.date.sdate2002-10-25en
dc.description.abstractRecent progress in technology has facilitated the design, testing, and deployment of traffic signal priority strategies for transit buses. However, a clear consensus has not emerged regarding the evaluation of these strategies. Each agency implementing these strategies can have differing goals, and there are often conflicting issues, needs, and concerns among the various stakeholders. This research attempts to assist in the evaluation of such strategies by presenting an evaluation framework and plan that provides a systematic method to assess potential impacts. The results of the research include the development of specific measures corresponding to particular objectives, with descriptions to facilitate their use by agencies evaluating traffic signal priority. The use of this framework and plan is illustrated on the Columbia Pike corridor in Arlington, Virginia with the use of the INTEGRATION simulation package. In building upon prior efforts on this corridor, this work presents a method of simulating conditional granting of priority to late buses in an attempt to investigate the impacts of priority on service reliability. Using the measures developed in this research, statistically significant improvements of 3.2% were found for bus service reliability and 0.9% for bus efficiency, while negative other traffic-related impacts were found in the form of increases in overall delay to the corridor of 1.0% on a vehicle basis or 0.6% on a person basis. Areas identified for future research include extensions to INTEGRATION to permit consideration of real-time conditional priority, further exploration of the relationship between components of bus travel times, and examination of the role of passenger loads on priority operation and impacts.en
dc.description.degreePh. D.en
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10252002-181921en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10252002-181921/en
dc.identifier.urihttp://hdl.handle.net/10919/29367en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartetd.pdfen
dc.relation.haspartvita.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectSimulationen
dc.subjectSignal priorityen
dc.subjectBus transiten
dc.subjectEvaluationen
dc.titleEvaluation of Service Reliability Impacts of Traffic Signal Priority Strategies for Bus Transiten
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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