TOPICS / Air quality


A measure of the condition of ambient air with respect to its effects on public health and the environment. Generally defined in terms of concentrations of six principal pollutants: carbon monoxide, nitrogen dioxide, sulfur dioxide, lead, ozone, and particulate matter.

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Impacts of world class vehicle efficiency and emissions regulations in select G20 countries
Characterizes the climate and health benefits of adopting world-class standards for new vehicle efficiency/CO2 and conventional pollutant emissions in all members of the G20 Transport Task Group.
Workshop on particle emissions from heavy-duty buses and trucks, alternatives for Mexico City
The Secretary of the Environment (SEDEMA) of Mexico City hosted a workshop on eliminating particle emissions from heavy-duty buses and trucks in Mexico City.
Technology pathways for diesel engines used in non-road vehicles and equipment
Current non-road regulatory programs lag behind comparable programs for on-road diesel engines, and are not stringent enough to compel the use of the best available technologies for the control of PM and NOx emissions.
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