• Login
    View Item 
    •   SMARTech Home
    • Georgia Tech Theses and Dissertations
    • Georgia Tech Theses and Dissertations
    • View Item
    •   SMARTech Home
    • Georgia Tech Theses and Dissertations
    • Georgia Tech Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Sensitivity analysis of operational performance under conventional diamond interchange and diverging diamond interchange

    Thumbnail
    View/Open
    PARK-THESIS-2017.pdf (5.476Mb)
    Date
    2017-12-11
    Author
    Park, Sung Jun
    Metadata
    Show full item record
    Abstract
    Rapidly growing traffic volumes and changes in traffic patterns over time have forced many intersections and interchanges into sub-optimal operation. Diverging diamond interchange (DDI) is one of many innovative interchange designs currently being proposed and implemented to better accommodate these changes. This study compares the operational performance of a conventional diamond interchange (CDI) and a DDI at different traffic volumes and turning movement combinations, and explores conditions for which one interchange design may be more advantageous over the other. To achieve this objective, traffic simulation models built using the microscopic simulation software, VISSIM, and procedures involving the Critical Lane Volume (CLV) method were used to conduct sensitivity analyses at different traffic conditions and to explore differences in delay, travel time, queue length, number of stops, and volume-to-capacity ratio between the two interchange designs studied. The results of the study show that the DDI will have better operational performance at high cross street traffic volumes with high left-turn ratio (above 50%), while the CDI will perform better at low cross street traffic volumes with low left-turn ratio (below 30%). The through/left proportion where the CDI and DDI has similar performance is dependent to the cross street cross sections. This study is one of the first to examine in detail the parameters and conditions that are best accommodated by the DDI related to conventional interchanges. Findings from this study can support planning and decision making processes associated with the implementation of DDIs.
    URI
    http://hdl.handle.net/1853/59287
    Collections
    • Georgia Tech Theses and Dissertations [23403]
    • School of Civil and Environmental Engineering Theses and Dissertations [1723]

    Browse

    All of SMARTechCommunities & CollectionsDatesAuthorsTitlesSubjectsTypesThis CollectionDatesAuthorsTitlesSubjectsTypes

    My SMARTech

    Login

    Statistics

    View Usage StatisticsView Google Analytics Statistics
    facebook instagram twitter youtube
    • My Account
    • Contact us
    • Directory
    • Campus Map
    • Support/Give
    • Library Accessibility
      • About SMARTech
      • SMARTech Terms of Use
    Georgia Tech Library266 4th Street NW, Atlanta, GA 30332
    404.894.4500
    • Emergency Information
    • Legal and Privacy Information
    • Human Trafficking Notice
    • Accessibility
    • Accountability
    • Accreditation
    • Employment
    © 2020 Georgia Institute of Technology