The U.S. Federal Highway Administration has released a reference document on safety for use by transportation planners. The report is designed to serve as a companion to the National Cooperative Highway Research Program (NCHRP) Report 500 series Guidance for Implementation of the American Association of State Highway and Transportation Officials Strategic Highway Safety Plan. The reference document describes an overview of transportation safety, the potential roles that transportation planners can play to advance it, a framework for incorporating safety into the transportation planning process, available sources that may be accessed to fund safety programs, and a menu of possible safety strategies.