Reference Library

Roundabouts

• Modern Roundabouts - The Safer Intersection Choice
  Highways for LIFE Webinar, February 4, 2009, covering the following topics:
  • What makes a modern roundabout different from other types of
    circular intersection?
  • Why are roundabouts safer?
  • What operational advantages do roundabouts provide?
  • At what type of locations may roundabouts be appropriate?
  • How can I overcome the common implementation barriers and
    public negative perceptions of roundabouts
  • What new tools and resources are being developed that will
    provide more information on roundabouts?
    
    
  Highways for LIFE is partnering with NHI to bring you NHI Innovations, a monthly Web Conference series that is Free to participants.

The Washington State Experience - Roundabout Intersections
Brian Walsh, P.E., Washington State Department of Transportation

Modern Roundabouts – The Safer Intersection Choice
Mark Doctor, P.E., FHWA Resource Center Safety & Design Technical Service Team

• Pedestrian Access to Modern Roundabouts:  Design and Operational Issues for Pedestrians who are Blind.
  Because crossing at a roundabout requires a pedestrian to visually select a safe gap between cars that may not stop, accessibility for people with vision impairments has been problematic.
• Roundabouts in Maine
• The intersection of Rt. 202 and 237 in Gorham (Route 202/4 in the Little Falls Village?)
• The Knightville-Mill Creek (near the Ferry Village neighborhood) section of South Portland, part of the realignment of neighborhood streets that went along with the new Casco Bay Bridge from Portland to South Portland. (Sketch of the Knightville roundabout courtesy of Terry DeWan)
• Rt. 35, Kennebunk.
• Intersection of Rt. 302 and 202 in Windham.
• Roundabouts in New Hampshire
  • The entrance to the new high school at Broad Street and Coburn Ave. in Nashua. (image)
  • A second roundabout in Nashua at the south end of Main Street at the intersection of Main/So. Main/Daniel Webster Highway across the street from Rivier College. It is 1/4 mile north of Exit 3 of the Everett Turnpike. (image)
  • Court Street roundabout in Keene. It is located at the entrance to the Cheshire Medical Center and built in 2003. (image1) (image2)
  • Route 10 in Hanover about a mile north of the center of town (image1) (image2) (image3) (image4) (image5) (image6) (image7) (image8) (image9) (image10) (image11) (image12) (image13) (image14)
  • Proposed roundabout at the intersection of Newport & County Roads in New London
  • Plymouth at the intersection of Rt. 175-A and Main Street (Rt. 3) (under construction) [looking east toward Holderness over the new bridge]
  • Meredith at the intersection of Rt. 106 and Rt. 3 [Department of Transportation (DOT) Information Session] [looking west to Rt. 106] [looking north on Rt. 3]
  • "New roundabout to open on NH Route 1A in Rye (Foyes Corner)" NHDOT press release, November 14, 2007 (image1) (image2)
  • Roundabout projects in Concord
• Roundabouts in Vermont
  • Keck Circle at the north end of Main Street and Spring St. on Rt 12 in Montpelier. (image) (neighborhood survey) 
  • Rt. 7a in Manchester Center in front of the Shaws Supermarket/retail district.
  • Canadian Transportation Research Forum PowerPoint presentation containing photos of both the Manchester Grand Union (now Shaws) roundabout and Keck Circle in Montpelier.
  • The Junction of Rt. 5 and 9 in Brattleboro, just over the Rt. 9 bridge from NH. (image) (video)
• "Common Misperceptions about Modern Roundabouts"
  APA Transportation Planning Division newsletter article by Wes Butch, Stephen G. Metzer, AICP, and Charles R. Owens, ASLA
• Smaller than traffic circles, roundabouts gaining in popularity
  by Michael Cousineau, New Hampshire Union Leader Staff, Sunday, June. 3, 2007
• Roundabout Web sites:
  • Roundabout Information
    NH Department of Transportation
  • Modern Roundabouts - The Web site
    This Web site serves as one of the definitive sources on Modern Roundabouts and is a complement to the Federal Highway Administration’s research project aimed at developing a comprehensive guide to roundabouts design.
  • TrafficCalming.org
  • AlaskaRoundabouts.com
    Links to lots of infomation and video clips about roundabouts
  • US Department of Transportation
    Federal Highway Administration illustrations, photos and examples
  • Roundabouts.com
  • Roundabouts--Frequently Asked Questions
    Maryland State Highway Administration
  • RoundaboutsUSA.com
  • Roundabout Photos
    The City of Portland, Oregon, Office of Transportation
  • Roundabouts: More Than Just a Traffic Circle
  • Roundabouts Now
    Founded for the sole purpose of educating, advocating and informing on modern roundabouts matters, the Roundabouts Now website and e-magazine are the world’s only and most exclusive media channels entirely dedicated to the dissemination of modern roundabout information.
• "Modern Roundabouts, Global Warming, and Emissions Reductions: Status of Research, and Opportunities for North America" (CTRF 2001 paper) [Word File ] Contact Tony Reddington, AOT Policy Analyst, Agency of Transportation, Montpelier, VT 05633 (802-828-5755), e-mail Tony.Redington@state.vt.us for more information.

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