Traffic Calming

How is traffic calming age-friendly?

Traffic calming elements slow vehicle traffic and help to improve safety and livability in neighborhoods. These elements, like speed cushions and traffic circles, can help improve the pedestrian and biking environment.

A traffic circle with flowers and plants in Seattle.

Where should traffic calming be prioritized?

In residental areas on non-arterial streets and where neighborhood greenways are present. Traffic calming may also be used near schools or community centers.

Traffic calming elements are assessed, modified, and created by

  • Seattle Department of Transportation

Estimated cost*


* Cost levels:
$ = Under $100,000
$$ = $100,001-$500,000
$$$ = $500,001-$1,000,000
$$$$= Over $1,000,001


Streets Illustrated Traffic Calming Design Standards
SDOT Traffic Calming Program