The federal public lands—national forests, parks, and rangelands—are widely known for their vast natural resources: timber; range; minerals; watersheds; wildlife; and sweeping vistas of incredible beauty and diversity. No less notable are the cultural resources found on the public lands. Some of the earliest withdrawals of public lands from homesteading or other disposition occurred because of their cultural and historic importance.

There can be no sustainable development without sustainable transportation. It is an essential component not only because transportation is a prerequisite to development in general but also because transportation, especially our use of motorized vehicles, contributes substantially to a wide range of environmental problems, including energy waste, global warming, degradation of air and water, noise, ecosystem loss and fragmentation, and desecration of the landscape. Our nation's environmental quality will be sustainable only if we pursue transportation in a sustainable way.