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  2. United States vehicle emission standards - Wikipedia

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

    The amount of carbon dioxide emitted per liter or gallon burned varies by fuel type, since each type of fuel contains a different amount of carbon per gallon or liter. The ratings reflect carbon dioxide (CO 2), nitrous oxide (N 2 O) and methane (CH 4) emissions, weighted to reflect each gas's relative contribution to the greenhouse effect.

  3. List of U.S. states and territories by carbon dioxide emissions

    en.wikipedia.org/wiki/List_of_U.S._states_and...

    This is a list of U.S. states and territories by carbon dioxide emissions for energy use, [1] [2] as well as per capita [3] [4] and by area. [5] The state with the highest total carbon dioxide emissions is Texas and the lowest is Vermont. The state with the highest per capita carbon dioxide emissions is Wyoming and the lowest is New York.

  4. Regulation of greenhouse gases under the Clean Air Act

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

    State regulations outside the Clean Air Act do affect emissions, especially gas tax rates. As of 2020, several states in the northeastern United States were discussing a regional cap and trade system for carbon emissions from motor vehicle fuel sources, called the Transportation Climate Initiative . [ 47 ]

  5. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    The states are also attempting to compel the federal EPA to regulate greenhouse gas emissions, which as of 2007 it has declined to do. On 19 May 2009, news reports indicate that the Federal EPA will largely adopt California's standards on greenhouse gas emissions.

  6. Carbon neutrality in the United States - Wikipedia

    en.wikipedia.org/wiki/Carbon_neutrality_in_the...

    by April 2023, 22 states, plus Washington DC and Puerto Rico had set legislative or executive targets for clean power production. [2] all cars or light vehicles will have zero emissions (i.e. no internal combustion engine with gas or diesel) by 2035 in light duty vehicles, and no longer be bought by federal government by 2027. [3]

  7. Vehicle inspection in the United States - Wikipedia

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

    Striped: Both safety and emissions testing required. In the United States, vehicle safety inspection and emissions inspection are governed by each state individually. Fifteen states have a periodic (annual or biennial) safety inspection program, while Maryland requires a safety inspection and Alabama requires a VIN inspection on sale or transfer of vehicles which were previously registered in ...

  8. Majority of CO2 emissions linked to 57 producers and ... - AOL

    www.aol.com/news/majority-co2-emissions-linked...

    BRUSSELS/BERLIN (Reuters) -The vast majority of planet-warming carbon dioxide emissions since 2016 can be traced to a group of 57 fossil fuel and cement producers, researchers said on Thursday ...

  9. Corporate average fuel economy - Wikipedia

    en.wikipedia.org/wiki/Corporate_average_fuel_economy

    The proposal again explained that U.S. law (49 U.S. Code § 32919) requires that "a State or a political subdivision of a State may not adopt or enforce a law or regulation related to fuel economy standards or average fuel economy standards", and explained that laws or regulations applicable to motor vehicle greenhouse gas emissions are related ...