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Are new on-highway, heavy-duty diesel NOx standards coming down the road?


Key points:
• The Obama EPA initiated new rulemaking to further reduce NOx emissions from on-highway, heavy-duty diesel engines and vehicles.
• The Trump administration's regulatory pullback, however, could prompt California action with nationwide consequences.
• Component makers, in addition to engine and vehicle manufacturers, must now keep abreast of California developments as recent rulemakings have increasingly vehicle-wide impacts but also offer opportunity for competitive advantage.