Americans drove 15.5 billion fewer miles in the first six months of 2011 than in the first half of 2010
Highway travel declined 1.4 percent in March from a year ago as gasoline prices rose
Summit says "shale gale" is in Houston and $100 oil is here to stay.
Gasoline prices influence where households decide to locate by changing the cost of commuting, report says
Only five people lost their lives in Copenhagen traffic in 2009, the lowest number of road deaths ever recorded in Denmark's largest city and capital.
Without factoring in loan payments, it costs the average sedan driver $8,487 to drive 15,000 miles, according to an annual AAA survey.
Traffic casualties dropped 42% in London over 20 years on streets whose speed limits were lowered to 20 mph.
Houstonians believe better transit & walkability are the best long term solutions.
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