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Field Testing, Marketing, and Crash Test Analysis for Mini-Roundabouts

Presented by: Joe Bared – FHWA Ram Jagannathan - VHB ITE Roundabout Task Force November 10 th , 2010. Field Testing, Marketing, and Crash Test Analysis for Mini-Roundabouts. FHWA Mini-Roundabouts: Project Background.

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Field Testing, Marketing, and Crash Test Analysis for Mini-Roundabouts

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  1. Presented by: Joe Bared – FHWA Ram Jagannathan - VHB ITE Roundabout Task Force November 10th, 2010 Field Testing, Marketing, and Crash Test Analysis for Mini-Roundabouts

  2. FHWA Mini-Roundabouts: Project Background • Single-Lane and Multiple-Lane Roundabouts have been successfully deployed Worldwide and in the US • Mini-Roundabouts have been successfully deployed outside the US. • Less than 10 “TRUE” Mini-Roundabouts in the US (to the best of our current knowledge) • FHWA leading research efforts to promote successful deployment of Mini-Roundabouts in the US

  3. Roundabout Key Dimensions (FHWA – Roundabouts: An Informational Guide)

  4. Roundabout Categories(New Guide/NCHRP 672)

  5. FHWA Mini-Roundabouts: Undesirable Elements

  6. FHWA Mini-Roundabouts: Innovative Design Applications

  7. Existing Mini-Roundabouts (US) Dimondale Highway/East Road and Creyts Road, Dimondale, MI (Credit : http://www.roundaboutsusa.com)

  8. Existing Mini-Roundabouts (US) Dimondale Highway/East Road and Creyts Road, Dimondale, MI

  9. Existing Mini-Roundabouts (US) Mifflin Rd & Woodmill Dr, Dover, DE

  10. Existing Mini-Roundabouts (US) Thomson Creek Rd past the Baybridge, Stevensville, MD

  11. Existing Mini-Roundabouts (US) California & North Quad UC Davis, CA

  12. FHWA Mini-Roundabouts: Current FHWA Study Definition • Inscribed Diameter from 40 ft – 85 ft • Central Diameter from 12 ft – 25 ft • Traversable Center Island • Presence of Approach Islands (may or may not be Traversable) • Adequate Approach Deflection • Single Lane Entry and Departure • Entry Lane Widths reduced, typically 10’ – 11’ • Focus not limited to Residential Applications

  13. FHWA Mini-Roundabouts: Project Scope • Assess FIVE Existing Sites and Identify Good and Poor Design Elements • Prepare Design Templates for Agencies • Solicit TEN NEW Implementations • Conduct Before/After Evaluations of the TEN New Implementations • Develop Marketing Videos and Technical Reports

  14. FHWA MINI-ROUNDABOUTSMARKETING VIDEO

  15. FHWA MINI-ROUNDABOUTS MARKETING BROCHURE

  16. FHWA Mini-Roundabouts: YOUR SUPPORT SOLICITED • Publicize the Project • Implement or convince Agencies to Implement TEN (10) Mini-Roundabouts in the next 24 months as part of the FHWA project

  17. FHWA Mini-Roundabouts: If you are interested in participating in this study, need additional information, or desire a follow up call from the sponsoring agency, please contact:Wei Zhang, Ph.D., P.E. (FHWA Safety R&D)202-493-3317 (phone) 202-493-3419 (fax)wei.zhang@dot.govJoe Bared, Ph.D., P.E. (FHWA Operations R&D)202-493-3314 (phone) 202-493-3419 faxjoe.bared@dot.govRam Jagannathan (VHB, Inc.)703-847-3071 (phone) 703-847-0298 faxram@vhb.com

  18. Open Discussion

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