This report details the major trends in the United States transportation sector in 2010, as well as the underlying trends that caused them. The report opens with a summary of the economic sector, including sector-wide energy consumption trends. The second section includes a discussion on light-duty vehicles, and the third section discusses heavy-duty vehicles. The fourth section discusses the policies that shape the transportation sector, and the fifth section makes projections about what will happen in the highway sector in the next five years. A section on the freight rail industry completes the report.