Federal agencies (excluding the U.S. Postal Service) spend about $3 billion annually to acquire, operate, and maintain about 450,000 civilian and non-tactical military vehicles. Agencies may lease or buy vehicles from GSA, which also issues requirements and guidance on fleet management. In recent years, Congress and the President have raised concerns about the size and cost of federal agencies' fleets. In 2011, the President directed agencies to determine their optimal fleet inventories and set targets for achieving these inventories by 2015 with the goal of a more cost-effective fleet. This book discusses the notion of adopting leading practices and how they could improve management of federal vehicle fleets; overall increase in number of vehicle masts that some agencies decreased their fleets; and strategies needed to address aging delivery fleet.