Evaluating the Transit Signal Priority Impacts along the U.S. 1 Corridor in Northern Verginia

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dc.contributor.authorKamdar, Vaibhavi Killolen
dc.contributor.committeechairCollura, Johnen
dc.contributor.committeememberTeordorovic, Dusanen
dc.contributor.committeememberTignor, Samuel C.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T20:30:16Zen
dc.date.adate2005-01-12en
dc.date.available2014-03-14T20:30:16Zen
dc.date.issued2004-12-14en
dc.date.rdate2005-01-12en
dc.date.sdate2005-01-07en
dc.description.abstractHeavy traffic volumes in peak hours accompanied by closely located signalized intersections and nearside bus stops on U.S. 1, result in congestion and traffic delays that bus transit may be able to alleviate to some extent. The capital investment and operating costs of other transit solutions such as "Bus Rapid Transit" and "Heavy Rail Transit" projects were found to be cost prohibitive compared to bus transit signal priority (TSP) options. Successful implementation of a limited TSP pilot project led local authorities to conclude that TSP should be extended to the full length of the Fairfax Connector bus routes on U.S. 1. This research focused on testing the impacts of a ten second green extension priority strategy for all the northbound transit buses in the morning peak period at twenty-six signalized intersections along U.S. 1. A micro simulation model VISSIM 3.7 was used to analyze the impacts of TSP. The simulation analysis indicates that the Fairfax Connector buses might benefit from the green extension strategy. Overall, improvements of up to 4% for transit travel time savings and 5-13% reduction in control delay for transit vehicles were observed. Considering all side street traffic, the total increase in maximum queue length might be up to 1.23%. Future research possibilities proposed include the evaluation of different priority strategies such as an early green, red truncation and queue jumps. Impacts of using a dedicated lane for transit buses along with TSP can also be evaluated. Conditional transit signal priority may also include bus occupancy levels and bus latenesses.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-01072005-120035en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01072005-120035/en
dc.identifier.urihttp://hdl.handle.net/10919/30845en
dc.publisherVirginia Techen
dc.relation.haspartUS1_TSP_final.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectBus Efficiencyen
dc.subjectTransit Priorityen
dc.subjectVISSIMen
dc.subjectBus Control Delayen
dc.subjectUTDFen
dc.subjectNEMAen
dc.titleEvaluating the Transit Signal Priority Impacts along the U.S. 1 Corridor in Northern Verginiaen
dc.typeThesisen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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