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


Greg Spotts, Director
Address: 700 5th Ave, Suite 3800, Seattle, WA, 98104
Mailing Address: PO Box 34996, Seattle, WA, 98124-4996
Phone: (206) 684-7623

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The Seattle Department of Transportation (SDOT) is on a mission to deliver a transportation system that provides safe and affordable access to places and opportunities for everyone as we work to achieve our vision of Seattle as a thriving, equitable community powered by dependable transportation.