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Air Quality

Air Quality modeling is a requirement of the Clean Air Act for certain human-health impacting compounds, such as ozone and fine particulate matter, i.e. PM2.5 and PM10. MOBILE 6.2 is used to develop the emissions factors with area specific information, such as vehicle starts, vehicle age distribution and vehicle type distribution. Then these emission factors are used with Vehicle miles traveled (VMT) estimates from a travel demand model to calculate the total transportation sector contribution of pollutants into the atmosphere.