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United States vehicle emission standards are set through a combination of legislative mandates enacted by Congress through Clean Air Act (CAA) amendments from 1970 onwards, and executive regulations managed nationally by the Environmental Protection Agency (EPA), and more recently along with the National Highway Traffic Safety Administration (NHTSA).
In Canada, the Canadian Environmental Protection Act, 1999 (CEPA 1999) transfers the legislative authority for regulating emissions from on-road vehicles and engines to Environment Canada from Transport Canada's Motor Vehicle Safety Act. The Regulations align emission standards with the U.S. federal standards and apply to light-duty vehicles (e ...
Vehicle emissions control is the study of reducing the emissions produced by motor vehicles, especially internal combustion engines.The primary emissions studied include hydrocarbons, volatile organic compounds, carbon monoxide, carbon dioxide, nitrogen oxides, particulate matter, and sulfur oxides.
New vehicle CO2 emissions and fuel economy saw their most significant improvement in more than a decade in 2023, according to the Environmental Protection Agency's 2023 Automotive Trends Report ...
Section 202(a)(1) of the Clean Air Act requires the Administrator of the EPA to establish standards "applicable to the emission of any air pollutant from…new motor vehicles or new motor vehicle engines, which in [her] judgment cause, or contribute to, air pollution which may reasonably be anticipated to endanger public health or welfare" (emphasis added). [3]
General Motors will pay nearly $146 million in penalties to the federal government because 5.9 million of its older vehicles do not comply with emissions and fuel economy standards. The National ...
Carbon dioxide is a greenhouse gas. Motor vehicle CO 2 emissions are part of the anthropogenic contribution to the growth of CO 2 concentrations in the atmosphere which according to the vast majority of the scientific community is causing climate change. [34]
Battery electric vehicles emit virtually no CO2 during operation compared with combustion-engine vehicles, but battery cell production can create so much pollution that it can take EVs tens of ...