Effect of Traffic Roundabout on Safety in Arizona

The main objective of this research project is to evaluate the effect of using roundabouts on crash rate and severity in cities and counties in Arizona. Other objectives include evaluating the proper use of these roundabouts at these locations and developing recommendations for improving future use of roundabouts in Arizona. It includes the following tasks: (1) Review of Literature and Arizona Practice on Roundabouts; (2) Analyze Accident Records Before and After Roundabouts in Arizona; (3) Conclusions on Roundabout on Safety and Recommendations for Improvement; and (4) Final Report.


  • English


  • Status: Completed
  • Contract Numbers:



  • Sponsor Organizations:

    National Transportation Center @ Maryland

    1173 Glenn L. Martin Hall
    University of Maryland
    College Park, Maryland  United States  20742
  • Project Managers:

    Zhang, Lei

  • Performing Organizations:

    Arizona State University, Tempe

    Tempe, AZ  United States 
  • Principal Investigators:

    Mamlouk, Michael

  • Start Date: 20150101
  • Expected Completion Date: 0
  • Actual Completion Date: 20151231
  • Source Data: RiP Project 39040

Subject/Index Terms

Filing Info

  • Accession Number: 01590797
  • Record Type: Research project
  • Source Agency: National Transportation Center @ Maryland
  • Contract Numbers: DTRT13-G-UTC30, NTC2015-SU-R-03
  • Files: UTC, RiP
  • Created Date: Feb 23 2016 1:00AM