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Vehicle emissions: progress and challenges

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  1. Health Effects Institute. Special Report 17: Traffic-Related Air Pollution: A Critical Review of the Literature on Emissions, Exposure, and Health Effects, January 2010.

  2. US Department of Transportation. Federal Highway Administration. Quick Find: Vehicle Miles of Travel—Highway Statistics Series.

  3. US EPA. National Emissions Inventory (NEI) Air Pollutant Emissions Trends Data. 1970–2008 Average Annual Emissions, All Criteria Pollutants (2009).

  4. US EPA. Our Nation’s Air—Status and Trends Through 2008.

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Correspondence to Robert F Sawyer.

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Sawyer, R. Vehicle emissions: progress and challenges. J Expo Sci Environ Epidemiol 20, 487–488 (2010).

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