People living in households near public transit travel 12 fewer miles per day which is 27 percent less than persons in households with no access to public transit according to the study. This equates to an individual household reduction of 223 gallons of gasoline a year.Smart Growth America - Growing Cooler
They warn that if sprawling development continues to fuel growth in driving, the projected 59 percent increase in the total miles driven between 2005 and 2030 will overwhelm expected gains from vehicle efficiency and low-carbon fuels. Even if the most stringent fuel-efficiency proposals under consideration are enacted, notes co-author Steve Winkelman, “vehicle emissions still would be 40 percent above 1990 levels in 2030 – entirely off-track from reductions of 60-80 percent below 1990 levels by 2050 required for climate protection.“Department of Homeland Security - Transit Threat Assessment
The Greenness of Cities - Edward Glaeser
Over the past 50 years, automobile oriented suburbs have grown much more quickly than denser urban areas, and over the past six years, the four fastest growing American metropolitan areas have been Atlanta, Dallas, Houston and Phoenix—all hot places that use an impressive amount of electricity to create a pleasant year-round climate. Cars and air conditioners both lead to signifi cant emissions of carbon dioxide, which an increasing body of evidence has linked to potentially dangerous climate change. If this evidence is correct, then there are serious social costs associated with new forms of development that tend to be extremely energy intensive.