Future heavy-duty emission standards: An opportunity for international harmonization
from Automative World
Air pollution continues to be a major threat to public health. In 2017, 96% of the European Union's urban population was exposed to ground ozone levels in excess of air quality guidelines (AQGs) from the World Health Organization (WHO). In the United States, the picture is similar. An estimated 93% of the U.S. urban population lives in cities with ground-level ozone levels higher than WHO's AQGs.
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