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dc.contributor.advisorVirkler, Mark Roberten_US
dc.contributor.authorBoddapati, Pavanien_US
dc.date.issued2008en_US
dc.date.submitted2008 Summeren
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.en_US
dc.descriptionTitle from title screen of research.pdf file (viewed on August 10, 2009)en_US
dc.descriptionIncludes bibliographical references.en_US
dc.descriptionThesis (M.S.) University of Missouri-Columbia 2008.en_US
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Civil engineering.en_US
dc.description.abstractMany states use rural expressway median crossovers which provide for separation between the two opposing traffic lanes to manage the direct left turn movements between the expressways and cross roads. As the volume increases on the major road, the traffic from the crossroad faces difficulty in finding a gap to enter the other side of the driveway which results in long travel and delay times. Sometimes the storage length provided for the expressway vehicles to make a left turn at the median crossover may get occupied completely and the vehicles may extend back creating a dangerous situation. The research describes the comparative study of type 2 median crossovers and Median U-Turns and estimates where the rural expressway Type 2 median crossover fails in its operation. The Highway Capacity Software and VISSIM, the simulation tool, were used to obtain the performance characteristics of the median crossover based on operational parameters including travel time, delay time and Level of service. A design tool was developed that helps to make a decision on the distance required to be provided between the crossroad and the Median U-Turn. This design tool is based on the volume combinations of the crossroad and the major road. Various combinations of traffic volumes have been assumed based on which, the extent to which the conventional design option, the Median U-Turn with unsignalized condition and signalized condition will work were determined from the performance measures obtained in VISSIM. Cost estimates that include the construction costs and user costs have been made for all the three design options.en_US
dc.identifier.merlin.b7061524xen_US
dc.identifier.oclc429908757en_US
dc.identifier.otherBoddapatiP-072908-T11474en_US
dc.identifier.urihttp://hdl.handle.net/10355/5676
dc.publisherUniversity of Missouri--Columbiaen_US
dc.relation.ispartof2008 Freely available theses (MU)en_US
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2008 Theses
dc.subject.lcshMedian stripsen_US
dc.subject.lcshRoads -- Interchanges and intersections -- Safety measuresen_US
dc.subject.lcshRoads -- Design and constructionen_US
dc.subject.lcshTraffic engineeringen_US
dc.titleComparative study of type 2 median crossovers and median u-turnsen_US
dc.typeThesisen_US
thesis.degree.disciplineCivil engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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