Chapter 5 - Transportation, Energy, and the Environment

Chapter 5 - Transportation, Energy, and the Environment

Serious energy and environmental issues are associated with transportation.The U.S. transportation sector remains almost entirely dependent on petroleum as an energy source and more than 50 percent of the petroleum used in the United States must now be imported. Petroleum use is responsible for most of the environmental problems resulting from transportation, including carbon dioxide emissions that may contribute to global climate change.