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This document is disseminated under the sponsorship of the United States Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its contents or use thereof. The United States Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear herein only because they are considered essential to the objective of this document.
Cover photos: © iStockPhoto.com/(Highway) Urbancow; (Bus) RiverNorthPhotography; (Train) KStork; (Bicyclist) jondpatton; (Pedestrian) RiverNorthPhotography