With the changes made to 35th SW (and more coming) and Roxbury Street SW, and the future changes planned for the Fauntleroy Boulevard project the Seattle Department of Transportation is seeking public opinion on what is known as "Traffic Calming" which involves physical design (such as limiting the number of traffic lanes) and other measures such as reduced speed limits, friction strips or speed bumps to control speed to improve safety for motorists, pedestrians and cyclists. These measures aim to encourage safer, more responsible driving and potentially reduce traffic flow.

They have a survey they'd like you to fill out here:
https://www.surveymonkey.com/r/NeighborhoodTrafficCalming

And if you have feelings about their efforts there are places to express yourself.

You can learn more about the SDOT Traffic Calming Program here.