Federal motor vehicle emission goals for CO, HC, and NOx based on desired air quality levels.
D000397:Air Pollution / Q000517:prevention & control*; D001336:Automobiles / Q000592:standards*; D002248:Carbon Monoxide / Q000592:standards*; D006801:Humans; D006838:Hydrocarbons / Q000592:standards*; D009584:Nitrogen / Q000592:standards*; D010087:Oxides / Q000592:standards*
D006838:Hydrocarbons; D010087:Oxides; D002248:Carbon Monoxide; D009584:Nitrogen