Electronic resources and links

Comprehensive Roundabout Site

• FHWA roundabouts information

Iowa Links

• Iowa DOT design manual, Section 6A-3, Modern Roundabouts-General Guidelines - www.iowadot.gov/design/dmanual/06a-03.pdf
• Iowa State University Institute for Transportation, Modern roundabout guidance for the Iowa DOT - www.intrans.iastate.edu/research/detail.cfm?projectID=1155222883

Videos and Tutorials

One of the best ways to understand modern roundabouts is to see them in operation. The following sites include videos of modern roundabouts.

• FHWA videos
• Two-minute introductory video from the Insurance Institute for Highway Safety (IIHS) - www.iihs.org/research/qanda/roundabouts.html
• New York State Department of Transportation roundabouts - www.nysdot.gov/main/roundabouts
• Wisconsin Department of Transportation, Roundabouts - how roundabouts work - www.dot.wisconsin.gov/safety/motorist/roaddesign/roundabout-works.htm
• Washington State Department of Transportation, how to drive a roundabout - www.wsdot.wa.gov/safety/roundabouts/
• Ourston Roundabout Engineering web cameras - http://www.ourston.com/resources/webcams.html
• City of Sammamish, Washington - www.ci.sammamish.wa.us/RoundaboutDemo.aspx
• Downloadable Brochures
  How to navigate roundabouts safely - This publication is a useful tool for acquainting motorists, pedestrians, and bicyclists with this kind of intersection. This publication was sponsored by the Iowa Highway Safety Management System and Iowa State University's Center for Transportation Research and Education. Available in two formats:

  8 1/2 x 11 format (106k *pdf) - www.ctre.iastate.edu/pubs/8.5x11BROCHURE.pdf

  8 1/2 x 14 format (108k *pdf) - www.ctre.iastate.edu/pubs/8.5x14ROUNDABOUT.pdf

Other States and Cities

• Alaska (Lounsbury & Associates) - www.alaskaroundabouts.com/
• Kansas Department of Transportation, “Kansas Roundabout Guide: A supplement to FHWA's Roundabouts – An Information Guide” - http://www.ksdot.org/roundabouts/
• Virginia Dept. of Transportation - http://www.virginiadot.org/info/faq-roundabouts.asp
• Maryland State Highway Administration - http://www.roads.maryland.gov/Pages/Roundabouts.aspx
• New York State Department of Transportation - www.nysdot.gov/portal/page/portal/main/roundabouts
• New York State Department of Transportation, older driver resources - www.nydmv.state.ny.us/olderDriver/od_roundabout.htm
• Wisconsin Department of Transportation - www.dot.wisconsin.gov/safety/motorist/roaddesign/roundabout.htm
• Oregon Department of Transportation - www.oregon.gov/ODOT/HWY/ENGSERVICES/roundabout_home.shtml
• City of Scottsdale, Arizona - www.scottsdaleaz.gov/Traffic/Roundabouts/Safety.asp
• Arizona Department of Transportation - www.azdot.gov/ccpartnerships/roundabouts/history.asp

Other Resources

• Transportation Research Board (TRB) Task Force on Roundabouts
• Kansas State University Center for Transportation Research and Training -
  www.k-state.edu/roundabouts/
• Kittelson & Associates, Inc. - roundabout.kittelson.com/
• Ourston Roundabout Engineering - www.ourston.com
• MTJ Engineering - mtjengineering.com
• Insurance Institute for Highway Safety - http://www.iihs.org/research/topics/roundabouts.html
• Iowa State University Institute for Transportation, Impacts of Roundabouts on a Corridor or Roadway Network - www.intrans.iastate.edu/research/detail.cfm?projectID=50364376
• FHWA's Public Roads magazine article from 1995, “Roundabout Safety Comes to America” - www.tfhrc.gov/pubrds/fall95/p95a41.htm
• Trasnportation Canada - http://www.tc.gc.ca/eng/roadsafety/tp-tp14787-menu-179.htm

Design and Traffic Safety Resources

Iowa Department of Transportation
Iowa DOT's Traffic Engineering Assistance Program:

The Iowa Department of Transportation offers no-cost, expert roundabout reviews during the feasibility, planning, design or operation of roundabouts in Iowa. The DOT is presently using a nationally-known and respected roundabout consulting firm to help ensure early success for roundabouts in Iowa, until such time that in-state experience and expertise are developed. Requests for services may be directed to Tim Simodynes, PE, Iowa DOT's Office of Traffic and Safety at 515-239-1349 or tim.simodynes@dot.iowa.gov or be accessed by contacting the district local systems engineer in your part of the state. The district local systems engineers are listed in the DOT's Need Answers publication.

• Design Resources:
  Office of Design home page
  • Michael Kennerly, Director
    Office of Design, 515-239-1243
    Michael.Kennerly@dot.iowa.gov
  • Deanna Maifield, Design Methods Section
    Office of Design, 515-239-1402
    Deanna.Maifield@dot.iowa.gov
• Traffic Safety Resources:
  Office of Traffic and Safety home page
  • Tim Simodynes, Safety Reviews
    515-239-1349
    Tim.Simodynes@dot.iowa.gov