EPA finalizes MY 2027 heavy-duty truck NOx standards; first step in Clean Trucks Plan
Green Car Congress
DECEMBER 21, 2022
The US Environmental Protection Agency (EPA) finalized more stringent NO x emissions limits for model year 2027 and later heavy-duty engines and vehicles. times, and will yield emissions warranties that are 2.8–4.5 National heavy-duty vehicle NO x emissions (annual US tons) for calendar years 2027 - 2045. times longer.
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