When it comes to community changes to promote physical activity, decision makers are often persuaded by economic arguments, more so than health benefits.
NPAS culled reports for economic points and quotes to illustrate the benefits of walkability and bike-ability. The result is a set of slides you can download for use in your community. References and links are included on the slides so you can go the source as needed.
The slide format is used for ease of reference. Download the full PowerPoint set: NPAS Citations on Economic Benefits
Addendum: The National Recreation and Park Association released The Economic Impact of Local Parks in early 2018. The report says U.S. parks and recreation agencies have generated more than $154 billion in economic activity. See this webinar for more information.