September 11, 2008 — The Department of Energy has just released the 27th edition of the Transportation Energy Data Book. The book, available at https://tedb.ornl.gov/, is produced by Stacy Davis of Oak Ridge National Laboratory's Center for Transportation Analysis. New data in this year's edition include: transportation petroleum use by mode; ethanol consumption; number of vehicles per 1000 people in different regions of the world for 1996-2006 (China grew from 9.3 to 26.6); mpg for trucks as a function of speed; characteristics of daily driving; percent of housing units with a garage or carport; and more. The data book, created under the Office of Planning, Budget and Analysis in DOE's Office of Energy Efficiency and Renewable Energy, draws together transportation data from diverse sources under a single, comprehensive document. It is a valuable tool for informing policymakers and analysts about activity in the transportation sector. Also available is https://www.fueleconomy.gov, maintained jointly by DOE's Office of Energy Efficiency and the U.S. Environmental Protection Agency, which offers tips to help you reduce the amount of gas you use