United States Department of Transportation
i
Tailpipe Emissions-Related Knowledge in Northern Climates
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2012-06-30
[PDF-1002.92 KB]
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Abstract:Approximately a quarter of all greenhouse gases originate from motor vehicle tailpipe emissions (Intergovernmental Panel on Climate Change, 2007). Along with reducing household energy usage, changes in transportation behavior would have the most direct impact on lowering consumer output of greenhouse gases, specifically carbon dioxide. Despite increased levels of awareness surrounding global warming and interest in reducing greenhouse gases in the atmosphere, there is little evidence that people have been willing to make changes in their lives to attain this collective goal. Moreover, it is not clear that consumer-oriented strategies designed to change patterns of consumption – e.g., switching over to more efficient hybrid electric vehicles – will alone be able to reduce emissions to levels necessary to prevent irreversible climate change by the middle part of this century (Hansen et al., 2008).
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