"Transportation Investments in Response to Economic Downturns, Transportation Research Board Special Report 312, provides guidance for federal and state officials on the best ways to use stimulus funds for transportation in the future and methods for evaluating such investments. The report examines lessons learned and impacts from the states' management of the transportation component of the American Recovery and Reinvestment Act of 2009, which provided $48.1 billion for U.S. Department of Transportation programs"--Provided by publisher.