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another reason: global warming

If we don't reduce VMT our efforts to curb greenhouse gas emissions from the transportation sector will be undermined. From Growing Cooler: The Evidence on Urban Development and Climate Change:

Meeting the growing demand for conveniently located homes in walkable neighborhoods could significantly reduce the growth in the number of miles Americans drive, shrinking the nation's carbon footprint while giving people more housing choices, according to a team of leading urban planning researchers.

In a comprehensive review of dozens of studies, published by the Urban Land Institute, the researchers conclude that urban development is both a key contributor to climate change and an essential factor in combating it.

They warn that if sprawling development continues to fuel growth in driving, the projected 48 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 34 percent above 1990 levels in 2030 - entirely off-track from reductions of 60-80 percent below 1990 levels by 2050 required for climate protection."

"Curbing emissions from cars depends on a three-legged stool: improved vehicle efficiency, cleaner fuels, and a reduction in driving," said lead author Reid Ewing, Research Professor at the National Center for Smart Growth, University of Maryland. "The research shows that one of the best ways to reduce vehicle travel is to build places where people can accomplish more with less driving."

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by: desmoinesdem @ Tue Jul 07, 2009 at 12:47:30 PM CDT