Mini Roundabout / Neighborhood Traffic Circle
Mini roundabouts and neighborhood traffic circles can be installed at unsignalized intersections of local streets to calm traffic and reduce speeds. Mini roundabouts may be installed using simple pavement markings, a combination of markings and vertical delineators, or temporary islands. They create opportunities for plantings or artistic elements that help beautify the street and the surrounding neighborhood. Careful attention should be paid to the available lane width and turning radius around the traffic circle.
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British Columbia, Canada
(Wikimedia Commons, Richard Drdul,
CC BY-SA 2.0) |
San Francisco, CA (Kittelson & Associates, Inc.) |
Program Goals This Project Type Meets
- Increase safety (speed management)
- Invite public use
Typical Applications
- At unsignalized intersections of residential streets
Material Options
Design Considerations
- Where applicable, maintain shared lane markings or intersection crossing markings to guide bicyclists through the intersection.
- Where a bicycle boulevard turns at a minor intersection, use bicycle way-finding route markings, and reinforce route direction using shared lane markings.
- Provide approximately 15 feet of clearance between the circle and the edge of the roadway
- Maintain truck, bus, and fire truck turning ability
Other Considerations
- Opportunity to include artistic elements and/or coordinate with a larger intersection mural project
- ADA accessibility of the sidewalks, curb ramps, and extension itself, particularly for pedestrians with visual impairments
Other Resources