Search Results for keywords:"vehicle emissions"

Found 3 results

Search Results: keywords:"vehicle emissions"

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  • 2021-00271 — Final Anti-Backsliding Determination for Renewable Fuels and Air Quality
    Type:Rule
    Citation:86 FR 3827
    Reading Time:about 2 minutes

    The Environmental Protection Agency (EPA) has concluded that no further measures are needed to address air quality issues from renewable fuels, as per the Clean Air Act (CAA). This decision follows a study, known as the "anti-backsliding study," which evaluated whether the renewable fuel volumes required under the CAA would worsen air quality due to changes in vehicle emissions. After inviting public comments on the proposed determination announced in June 2020, the EPA decided that existing measures are sufficient to manage the air quality impacts. The study and details about this decision can be found on the EPA's website.

    Simple Explanation

    The EPA says that the way they plan to use renewable fuels won’t make the air dirtier, so they don’t need any new plans to fix it. They looked at the problem carefully and decided the current rules are good enough.

  • 2024-30246 — Air Plan Revisions; California; California Mobile Source Regulations
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    Type:Proposed Rule
    Citation:89 FR 103726
    Reading Time:about 39 minutes

    The Environmental Protection Agency (EPA) is proposing to approve revisions submitted by California concerning its State Implementation Plan (SIP), which includes regulations for reducing emissions from new vehicles and engines. The updates encompass several rules on vehicle emissions, such as transitioning to more zero-emission trucks and shuttles, extending warranties for heavy-duty diesel engines, and setting up testing standards for zero-emission powertrains. These regulations are designed to help California meet federal air quality standards and reduce air pollution from vehicles. Comments on this proposal are open until January 21, 2025.

    Simple Explanation

    The EPA wants to let California follow new rules that help make cars and trucks cleaner, which means they'll make less pollution and be better for the air we breathe. People can share what they think about these new rules until January 21, 2025.

  • 2021-00023 — Official Release of the MOVES3 Motor Vehicle Emissions Model for SIPs and Transportation Conformity
    Type:Notice
    Citation:86 FR 1106
    Reading Time:about 21 minutes

    The Environmental Protection Agency (EPA) has released the MOtor Vehicle Emission Simulator model (MOVES3) for use outside of California. This is an update to the EPA's tools for estimating emissions from vehicles. MOVES3 should be used for state plans and transportation conformity, starting a two-year grace period that allows its adoption before it becomes mandatory by 2023. It includes updates like new emission rates and data from various sources, improving the accuracy of emissions estimates.

    Simple Explanation

    The EPA has made a new tool called MOVES3 to help figure out the pollution from cars and trucks, but it won’t be required to use it for a couple of years to help people get used to it.