Roundabouts are a type of circular roadway intersection that have become increasingly common in the Bay Area — improving safety on streets, roads and highways.

Roundabouts use the curve of the roadway to reduce driver speeds, which can reduce the number of serious injuries and fatalities. They are a proven safety countermeasure that is recommended by Federal Highway Administration.

To keep vehicles moving into the flow of traffic, roundabouts use yield signs instead of stop signs or traffic lights. They have been shown to:

  • Improve safety
  • Reduce traffic congestion
  • Reduce greenhouse gas emissions
  • Reduce maintenance costs

Roundabouts can be designed in a variety of shapes and sizes, which allows them to meet a wide range of traffic conditions.


Roundabout Videos in Northern California

View video examples of different uses of roundabouts from around the Bay Area and throughout northern California.

See the videos.
Aerial of a roundabout intersection.