{"data":{"id":"us/40-cfr-86.405-78","jurisdiction":"us","citation":"40 CFR 86.405-78","heading":"-78 Measurement system.","body":"(a) This subpart and subpart F have been written using System International (SI) units. SI units will be used to determine compliance with these regulations. English equivalents have been indicated solely for the user's convenience.\n(b) [Reserved]","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 86—CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES","Subpart E—Emission Regulations for 1978 and Later New Motorcycles, General Provisions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"3e675ca4bd9afd3b7a63270d2b245161e7a5be93f48894d5d6471650b4c9e825","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-86.404-78","next":"us/40-cfr-86.406-78"},"notice":"GroundRules: Original legal text. Not legal advice."}