The Sightline Institute (formerly known as Northwest Environment Watch) recently published its 2006 Cascadia Scorecard.
Here are some excerpts from the Sprawl and Health section:
In subtle yet cumulatively significant ways, extra driving adds to the burden of death, injury and disease. Car accidents, obesity and physical inactivity, exposure to air pollution, and reduced opportunity for neighborly interactions can all result. And all these things take a toll on our health.
…mile for mile, riding a bus is more than ten times safer than driving a car.
…vehicle-related fees–fuel taxes, license and registration fees, and the like–cover only part of the costs of roads, bridges, public parking spaces, and other public expenses of driving. Taxpayers, even those who drive little, pick up the rest of the tab. If drivers had to pay the full costs for owning and operating their automobiles, they would pay more to drive–and, as a consequence, they would be less inclined to choose places to live where destinations are far apart and where driving is a necessity for every trip.