Complete streets accommodate pedestrians, bicyclists, transit, and cars, creating multimodal transportation networks. But how do communities achieve complete streets? What are the policies and practices that need to be put into place? Drawing on lessons learned from more than 30 communities around the country, this report provides insight into successful policy and implementation practices that have resulted in complete streets. Readers will learn how to build support for complete streets, adopt a policy, and integrate complete street concepts into plans, processes, and standards. In addition, this report provides insight into design issues, handling costs, and ways of working with various stakeholders. Case studies highlight communities that have adopted and implemented complete streets, and model policy language provides guidance to communities interested in writing and adopting a complete streets policy. Complete Streets: Best Policy and Implementation Practices is a product of a joint research project of APA and the National Complete Streets Coalition, with model policies prepared by Public Health Law and Policy.