This 2009 report by the U.S. Global Change Research Program (a Federal program that coordinates and integrates global research across 13 government agencies) examines the impacts of climate change on different regions of the U.S. and various sectors of the economy, including transportation. The U.S. Global Change Research Program has applied lessons from the 2009 report to develop a draft to update the National Climate Assessment. Click here to view the 2009 report and click here to view the 2013 draft report.