National Roundabouts Week is recognized each year during the third week of September.
During National Roundabouts Week, the Connecticut Department of Transportation (CTDOT) is joining the Federal Highway Administration (FHWA) to highlight the critical role roundabouts play in improving safety and reducing carbon emissions.
Circular in shape, a roundabout is a type of intersection that moves traffic one-way in a counterclockwise direction around a center island. Its channelized, curved approaches force vehicles to slow down and yield to crossing pedestrians or bicyclists and traffic already in the circle. By eliminating left turns, roundabouts remove the potential for head-on or broadside crashes, and without stop signs or traffic signals, traffic moves more freely, reducing congestion.
Nationally, the modern roundabout configuration results in up to an 82% reduction of fatal and serious injuries at formerly signalized and two-way stop-controlled intersections. Connecticut has also seen positive results, as a study of five roundabouts found an 81% reduction in severe crashes and a 44% reduction in total crashes. Other roundabout benefits include:
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Steady and efficient traffic flow
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Better intersection visibility
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Lower speeds for pedestrians and bicyclists
Roundabouts are recognized as a Safe System solution that can save lives and help achieve the goals of the National Roadway Safety Strategy. There are currently 10 modern roundabouts state roads and 22 on local roads in Connecticut, with more than a dozen planned.
“Converting signalized and stop-controlled intersections into modern roundabouts has been proven to reduce crashes and injuries in Connecticut. We’re strong believers in building roundabouts where appropriate because of the demonstrated safety and environmental benefits,” said Connecticut Department of Transportation Deputy Commissioner Laoise King. “Whether it’s a state or local road, roundabouts are reducing congestion and improving safety for all roadway users. I encourage towns and cities interested in building roundabouts in their communities to reach out to us – we have experts here ready and willing to help.”
The CTDOT Roundabout Committee is comprised of experienced engineers who assist with the planning, designing, and constructing of roundabouts around the state and serve as a resource for Connecticut towns and cities. The Committee reviews roundabout concepts, advises on good design practices, and can help answer questions regarding size, suitability, materials, pavement markings, and more.
For more information and resources on Connecticut roundabouts, visit ct.gov/dot.