US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 86 — CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINESSubpart F — Emission Regulations for 1978 and Later New Motorcycles; Test Procedures86.503-7840 C.F.R. § 86.503-78Abbreviations.Last amended: 2017Year: 2026Length: 12 wordsSubsections: 1Official source Cite as 40 C.F.R. § 86.503-78 (2026)(a) The abbreviations in § 86.403-78 apply to this subpart. (b) [Reserved]Cross-references to the CFR86.403-78Previous40 C.F.R. § 86.502-78Next40 C.F.R. § 86.504-78