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In the United States, the emission standards for non-road diesel engines are published in the US Code of Federal Regulations, Title 40, Part 89 (40 CFR Part 89). Tier 1–3 Standards were adopted in 1994 and was phased in between 1996 and 2000 for engines over 37 kW (50 hp). In 1998 the regulation included engines under 37 kW and introduced ...
The United States has its own set of emissions standards that all new vehicles must meet. In the United States, emissions standards are managed by the Environmental Protection Agency (EPA). It uses tiers to identify emission standards for cars, trucks and other motor vehicles. [8]
The Clean Air Act of 1990 required some states to enact vehicle emissions inspection programs. States impacted were those in metropolitan areas where air quality did not meet federal standards. [1] Some states, including Kentucky and Minnesota, have discontinued their testing programs in recent years with approval from the federal government.
Pages in category "Emission standards" The following 22 pages are in this category, out of 22 total. ... United States vehicle emission standards; V. Vehicle ...
In 2022, Ohio led a coalition of states in filing a petition to attempt to block California’s ability to enforce its own vehicle emissions standards, saying it violated the U.S. Constitution and ...
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.
The auto industry has cited lower sales growth in objecting to the EPA's preferred standards unveiled last April as part of the most ambitious plan ever to cut planet-warming emissions from ...
Seventeen states with vehicle emission standards tied to rules established in California face weighty decisions on whether to follow that state's strictest-in-the nation new rules that require all ...