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The Clean Air Act of 1963 (CAA) was passed as an extension of the Air Pollution Control Act of 1955, encouraging the federal government via the United States Public Health Service under the then-Department of Health, Education, and Welfare (HEW) to encourage research and development towards reducing pollution and working with states to establish their own emission reduction programs.
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]
A year ago in April, the U.S. Environmental Protection Agency (EPA) shocked the auto industry and heartened environmentalists by proposing tailpipe emissions standards so strict that, by model ...
In 1977, the federal Clean Air Act was amended by Congress to require states to implement vehicle emissions inspection programs, known as I/M programs (for Inspection and Maintenance), in all major metropolitan areas whose air quality failed to meet certain federal standards. New York's program started in 1982, California's program started in ...
The final rule issued by the EPA runs into criticism by Republicans as an EV mandate and ethanol proponents as ignoring benefits of renewable fuels
A new emissions rule for cars, trucks and vans sold in the United States from 2027 to 2032 will phase reductions in more slowly to allow charging infrastructure and low-carbon emissions vehicles ...
The Biden administration this week is expected to announce new automobile emissions standards that relax proposed tailpipe limits for three years but eventually reach the same strict standards set ...
The new emission standards for 1975 model year, as well as the increase in fuel usage, forced the invention of the catalytic converter for after-treatment of the exhaust gas. This was not possible with existing leaded gasoline, because the lead residue contaminated the platinum catalyst.