Traffic Operations Modeling of Connecticut Roundabouts

The Connecticut Department of Transportation (ConnDOT) has constructed four roundabouts in the State of Connecticut within the past ten years. VISSIM, a microscopic traffic simulation software program was utilized to analyze roundabout during their design phase. This project has collected a variety of traffic data at the roundabouts using Miovision Technologies. A large sample size of field data was analyzed to achieve accurate and statistically significant results. The research investigated a series of simulation parameters as calibration factors for describing driver behaviors at roundabouts. A VISSIM simulation of existing roundabouts was built to compare both queue length and travel time as predicted from simulation with measured field data. In the end, this project identified VISSIM input variables most critical to accurate modeling; summarized the recommended parameter values; and, provided recommendations for roundabout traffic operations modeling.

  • Record URL:
  • Corporate Authors:

    University of Connecticut, Storrs

    Connecticut Transportation Institute
    270 Middle Turnpike
    Storrs, CT  United States  06269-5202

    University of Hartford

    Department of Civil and Environmental Engineering
    West Hartford, CT  United States  06117

    Connecticut Department of Transportation

    2800 Berlin Turnpike
    Newington, CT  United States  06131

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Fang, Clara
  • Publication Date: 2015-12-30


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Maps; Photos; References; Tables;
  • Pagination: 624p

Subject/Index Terms

Filing Info

  • Accession Number: 01600747
  • Record Type: Publication
  • Report/Paper Numbers: CT-2284-Final Report
  • Contract Numbers: SPR-2284
  • Created Date: May 23 2016 8:04AM