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New Emissions Analytics study suggests pollution from tire wear now 1,850 times worse than exhaust emissions

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Since that study, which was transparently designed to quantify the worst-case tire emissions under legal driving, Emissions Analytics has been testing and analyzing tire wear emissions in more detail across a wider range of driving conditions, and has performed a detailed chemical analysis of hundreds of new tires.

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Ricardo testing finds DPF regeneration spikes particulate emissions, resulting in exceedance of Euro limits

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Testing of two popular Euro 6d-temp diesels by Ricardo, commissioned by the environmental NGO Transport & Environment (T&E), has found that the periodic regeneration of diesel particulate filters (DPFs) in the light-duty vehicles can generate spikes of particulate emissions of more than 1,000 times the normal rate.

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Nations agree on global, legally binding treaty on mercury emissions: Minamata Convention on Mercury

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At the conclusion of the International Negotiating Committee on Mercury ( INC5 ) meeting in Geneva ( earlier post ), nations agreed on a global, legally-binding treaty to prevent mercury emissions and releases. The international negotiators selected the Global Environment Facility (GEF) to fund implementation of the new Mercury Convention.

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Engine products group files legal challenge to EPAs partial waiver for E15

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Yet, E-15 has been shown to adversely affect engines in non-road products and later model year vehicles, cause emission failures and increase air pollution due to misfueling, the group says. We want to be sure that any new fuel will not increase air pollution, harm engines or endanger consumer safety. Earlier post.).

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EPA, NHTSA issue One National Program Rule; EPA withdraws CA waiver for GHG and fuel economy

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criteria pollutants—is not affected by the action. EPA said that the legal basis for withdrawing the California waiver is under CAA section 209(b)(1)(B), which covers compelling and extraordinary conditions. The California waiver authority exists because California has uniquely difficult problems with ozone-forming pollutants.

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CARB settles with American Honda Motor for $6.9M for violations of air quality regulations on small off-road engines

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Honda failed these tests demonstrating evaporative emissions of gasoline above the legal limit. Small off-road engines are a major source of pollution in California. In California in 2021, these small engines surpassed light-duty passenger cars as a source of smog-forming emissions. Honda’s settlement includes a $3.9-million

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German Federal Administrative Court rules diesel bans in cities possible

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In a highly anticipated decision, the German Federal Administrative Court (Bundesverwaltungsgericht) in Leipzig has ruled that cities can ban highly polluting diesel cars if necessary to achieve NO 2 emission limits. The Bundesverwaltungsgericht ruled that limited driving restrictions for certain diesel vehicles are legal and not excluded.

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