Roundabouts

Roundabouts are a type of circular intersection defined by the basic operational principle of entering traffic yielding to vehicles on the circulatory roadway. Roundabouts have geometric features providing a reduced speed environment that offers substantial safety advantages and excellent operational performance.  

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National Roundabouts Week

September 19-23, 2022

Georgia DOT celebrates National Roundabouts Week! Roundabouts allow for a safe and continuous flow of traffic. This alternative intersection improves safety by reducing the number of points where vehicles can cross paths and eliminates the potential for right-angle and head-on crashes. Read the information below to learn more about roundabouts and their function. ​



Open to the public airports  

In Operation

84
(on-system or state funding)
283 total
Takeoffs and landings 

Under Construction

50
(on-system)
Funding  

In Development

210
(on-system)​​



  • Improved safety: Reduces the number of points where vehicles can cross paths and eliminates the potential for right-angle and head-on crashes
  • Safer speeds: Another safety improvement is promoting lower vehicle speeds, giving drivers more time to react
  • Increased efficiency / reduced congestion: Yield-controlled design means fewer stops, fewer delays and shorter queues
  • Long-term cost effectiveness: roundabouts can save on long-term costs by not requiring the same maintenance and operational costs as traffic signals
  • Aesthetics: Allows for landscaping and beautification
  • Roundabouts significantly reduce pollution, noise impacts, and fuel consumption

The modern roundabout is characterized by the following basic principles:

  • Generally circular shape with counterclockwise traffic flow
  • Yield-at-Entry – Vehicles approaching the roundabout must wait for a gap in the circulating flow, or yield, before entering the circle
  • Slow speed environment – Through geometric curvature and deflection, the traffic is directed or channeled to the right with a curved entry path into the circulatory roadway
  • It can be more than one circulating lane
  • In some cases, right turns can bypass the circulating roadway
  • Safely accommodates cyclists and pedestrians by providing a low-speed environment


LegendConventional Intersection Conflict PointsRoundabout Conflict Points
Diverging84
Merging84
Crossing160
Total328

Statewide Roundabouts Map

​​Please access the map below to view roundabout locations in Georgia.  Use the map control tools to navigate and zoom.​​

 

 

Cont​acts

Please contact the following if you experience problems accessing the Analysis Tool or have questions regarding Roundabouts:
Georgia DOT Roundabout & Alternative Intersection Design Team
Office of Traffic Operations
         Email         ​​​​​​​​​​​​


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