Final California deadline for upgrading heavy-duty diesels to MY2010 or newer engines

Green Car Congress
By mmillikinJan 3, 2023, 9:16 am233 pts
California’s Truck and Bus regulation (earlier post) has been in effect since December 2008, with the purpose of reducing emissions of diesel particulate matter (PM), oxides of nitrogen (NOx) and other criteria pollutants from in-use diesel-fueled vehicles. Under the regulation, 1 January 2023 marked the…

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