A modern roundabout is a circular intersection where drivers travel counterclockwise around a center island. There are no traffic signals or stop signs. Drivers yield at entry to traffic in the roundabout, then enter the intersection and exit at their desired street

Why Modern Roundabouts?


  • Smaller Diameter = Slower Speeds

  • Virtually Eliminates T-bone & Head-On Collisions

  • Pedestrians Further from Intersection

  • Insurance Institute for Highway Safety(IIHS) & FHWA Studies show:

    • 37% Reduction in all collisions​

    • 40% Reduction in pedestrian crashes

    • 75% Reduction in injury collisions

    • 90% Reduction in fatalities


  • 65% More Efficient than Traditional Intersections

  • Not Required to Stop

  • Continuous Flow Intersection

  • 30% Reduction in Vehicle Emissions

  • Work during Power Outages 

  • Cheaper Operation & Maintenance

    • No hardware or electrical costs compared to light signals​

Roundabout Information

The environmental review, consultation, and other actions required by applicable Federal environmental laws for this project are being, or have been, carried out by ODOT pursuant to 23 U.S.C. 327 and a Memorandum of Understanding dated December 11, 2015, and executed by FHWA and ODOT.