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Public Works Department

Roundabouts


4-way roundabout

 

 

  1. Safety- Roundabouts have been shown to reduce fatal and injury accidents as much as 75%. The reduction in accidents is attributed to slower speeds and reduced number of conflict points
    (see Figure 1).
  2. Low Maintenance- Eliminates maintenance costs associated with traffic signals which amount to approximately $5,000 per year per intersection.
  3. Reduced Delay- By yielding at the entry rather than stopping and waiting for a green light, travel delay is significantly reduced. A reduction in delay corresponds to a decrease in fuel consumption and air pollution.
  4. Capacity- Intersections with high traffic volume of left turns are better handled by a roundabout than a multi-phased traffic signal.
  5. Aesthetics- The central island provides an opportunity to landscape and beautify the intersection. Hence roundabouts provide a gateway and an entry treatment to neighborhoods.

Roundabout with decorative area in the middle

Roundabout Illustrative Figure 1
Figure 1
 

1010 10th Street, Modesto, CA  95354  bullet  P.O. Box 642, Modesto, CA  95353  bullet (209) 577-5200
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