This Web page provides links to information on air pollutants and greenhouse gases from transportation and other mobile sources.

Mobile Source Emissions -Past, Present, and Future provides general information on the different air pollutants that are produced by mobile sources and fuels, the various programs that OTAQ has undertaken to control emissions of those pollutants, and the impact those programs have had on emissions.

Air Toxics provides information on a variety of mobile source air toxics (which are chemicals that are known or suspected to be hazardous to human health) and their environmental and public health effects. Topics include an integrated urban air toxics strategy and the National Toxic Inventory for on-highway vehicles, nonroad sources, aircraft, commercial marine vessels, and locomotives.

Climate Change provides information on the contribution of the transportation sector of the economy to overall emissions of carbon dioxide and other so-called "greenhouse gases" that are believed to contribute to possible climatic changes globally.

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