40 CFR 85.2301 - Applicability.
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The definitions provided by this subpart are effective February 23, 1995 and apply to all light-duty motor vehicles and trucks, heavy-duty motor vehicles and heavy-duty engines used in motor vehicles, and on-highway motorcycles as such vehicles and engines are regulated under section 177 and Title II part A of the Clean Air Act.
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.