03
September
2020
California NOx Omnibus Regulation Requires 90 Percent NOx Reduction by 2027
On August 27, 2020, the California Air Resources Board (CARB) approved the Heavy-Duty Low NOx Omnibus Regulation (Omnibus Regulation), which requires heavy-duty truck manufacturers to achieve stringent nitrogen oxide (NOx) emission standards. The Omnibus Regulation follows the board’s June 2020 approval of the Advanced Clean Trucks regulation, which requires medium- and heavy-duty truck manufacturers to increase the sales of zero-emission models. Both rules require that certain compliance milestones be met by 2024.
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