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  2. United States vehicle emission standards - Wikipedia

    en.wikipedia.org/wiki/United_States_vehicle...

    more than 2 model years old to 24 model years old; motorcycles, diesel-powered, and automobiles 25 model years or older exempt from emission testing – includes motor vehicles registered as an Antique or Classic under Texas law (either displaying state-mandated vanity license plate or vintage-era license plates (this also includes past general ...

  3. Vehicle inspection in the United States - Wikipedia

    en.wikipedia.org/wiki/Vehicle_inspection_in_the...

    Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [28]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.

  4. Ford Proving Grounds - Wikipedia

    en.wikipedia.org/wiki/Ford_Proving_Grounds

    The Arizona Proving Ground is operated year round. The climate is of a desert type with low annual rainfall and low relative humidity. Daytime temperatures are high throughout the summer months. The winters are mild. Nighttime temperatures frequently drop below freezing during the three coldest months, but the afternoons are usually sunny and warm.

  5. Biden adopts new emissions rules for US cars, gives ... - AOL

    www.aol.com/biden-adopts-emissions-rules-us...

    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 ...

  6. Biden adopts new emissions rules for US cars, gives ... - AOL

    www.aol.com/biden-adopts-emissions-rules-us...

    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

  7. California rule sets emission requirements but doesn't ban RV ...

    www.aol.com/california-rule-sets-emission...

    The rule requires 5-9% of medium- and heavy-duty vehicle sales to be zero-emission vehicles by the end of model year 2024, depending on the type of truck category, the site says. This range is ...

  8. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    Emission standards are the legal requirements governing air pollutants released into the atmosphere. Emission standards set quantitative limits on the permissible amount of specific air pollutants that may be released from specific sources over specific timeframes.

  9. Regulation of greenhouse gases under the Clean Air Act

    en.wikipedia.org/wiki/Regulation_of_greenhouse...

    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]