Study explores long-term trends in motor vehicle emissions in US urban areas; targeting high-emitters
Green Car Congress
AUGUST 19, 2013
The study found that the highest-emitting 10% of gasoline vehicles are now responsible for the overwhelming majority of running CO, NMHC, and NO x. However, they also found that decreases in emissions of these pollutants appear to be slowing down and may have leveled off. Credit: ACS, McDonald et al. Click to enlarge.
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