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State Air Regulations Can Go Above and Beyond National Standards 

Legal Planet

States and local air quality regulators have the legal authority to set particulate matter (PM), ozone, and nitrogen oxides (NOx) emissions standards and adopt regulations for these pollutants when they are already in attainment of the national ambient air quality standards ( NAAQS ) set by the U.S.

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We Can Electrify One in Three Heavy Duty Trucks by 2030: Here’s How.

Union of Concerned Scientists

The rapid growth in heavy-duty electric vehicle technology is encouraging. Often an oddity when considering environmental goals, manufacturers seem to be well ahead of regulators when it comes to electrification. It’s a vital missed opportunity that regulators are so out of step with the technology in this realm.

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Replacing California’s Oldest and Dirtiest Cars Will Save Money and Lives

Union of Concerned Scientists

As early as 1966 , the state began to take regulatory action to reduce pollution from passenger cars and trucks. As a result of continuing progress on regulations, the air-polluting emissions of new passenger vehicles currently for sale are thankfully much lower than those of older vehicles. Combining the PM 2.5

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Diesel is the Reason for the Sneezin’: Cleaner Holiday Deliveries are on the Horizon

Union of Concerned Scientists

But while greenhouse gas emissions may be reduced, a delivery fulfilled by a diesel-burning truck may lead to increases in emissions of smog-forming nitrogen oxides and lung-damaging particulate matter. The number of available electric truck models in the US and Canada has surpassed 180.

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Truck Loopholes 101 – When Emissions Regulations Don’t Match the Real World

Union of Concerned Scientists

The EPA is getting ready to finalize a critical regulation limiting emissions of smog-forming nitrogen oxide (NO X ) and soot (or particulate matter, PM 2.5 ) from new heavy-duty trucks. This is the first time EPA has sought to limit emissions in over two decades, and it is long overdue.

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Changes to California’s Electric Truck Proposal Could Reap Huge Climate and Air Quality Gains

Union of Concerned Scientists

This new regulation would apply to delivery vans, big rigs, box trucks, and buses. The Advanced Clean Fleets (ACF) rule has the potential to significantly reduce climate-warming greenhouse gas (GHG) emissions as well as harmful air pollutants like fine particulates (PM2.5)

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Reading the Tea Leaves: Biden’s and California’s Vehicle Regs at the D.C. Circuit

Legal Planet

The transportation sector is also a substantial source of nitrogen oxides and particulates, both of which are dangerous to human health. EPA is an effort by conservative states and fuel suppliers to block EPA regulations of greenhouse gas emissions from motor vehicles under the Clean Air Act.