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Mini Roundabouts Hillary Isebrands, PE FHWA Resource Center.

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Presentation on theme: "Mini Roundabouts Hillary Isebrands, PE FHWA Resource Center."— Presentation transcript:

1 Mini Roundabouts Hillary Isebrands, PE FHWA Resource Center

2 2 Existing Mini Roundabout Design Guidance Typical ICD Range: 45 – 90 ft Small roundabouts used in low-speed urban environments often characterized by having mountable (or painted only) center islands and splitter islands. The central island should be domed using 5 to 6 percent cross slope, with a maximum height of 5 inches. Source: FHWA Guide, 2000

3 FHWA Field Testing, Marketing and Crash Test Analysis for Mini-roundabouts Research Project This research project aims to promote well‐designed mini‐roundabout deployments in the US, quantify potential safety benefits and produce marketing materials.

4 Existing Mini Roundabouts in US Davis, CA (2) Diamondale, MI Dover, DE Stevensville, MD Waco, TX (2) Photos courtesy of VHB

5 Mini Roundabouts Dover, DE Waco, TX Photos courtesy of VHB

6 6 Mini Roundabouts – Diamondale, MI Photos courtesy of VHB

7 Courtesy of VHB

8 Implementation of at least 10 new mini roundabouts in the US - Before and after capacity and safety data collected - Needs to be constructed within next 18 months

9 Contact Joe Bared at FHWA (joe.bared@dot.gov) for more informationjoe.bared@dot.gov Photos courtesy of Hillary Isebrands


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