{"data":{"id":"us/40-cfr-86.1840-01","jurisdiction":"us","citation":"40 CFR 86.1840-01","heading":"-01 Special test procedures.","body":"Provisions for special test procedures apply as described in 40 CFR 1065.10 and 1066.10. For example, manufacturers must propose a procedure for EPA's review and advance approval for testing and certifying vehicles equipped with periodically regenerating aftertreatment devices, including sufficient documentation and data for EPA to fully evaluate the request.","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 S—General Compliance Provisions for Control of Air Pollution From New and In-Use Light-Duty Vehicles, Light-Duty Trucks, and Heavy-Duty Vehicles"],"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":"48779d01405aadfd1c40a535e24a0bcf85c4cae349e87c42f9590a9e81856856","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-86.1839-01","next":"us/40-cfr-86.1841-01"},"notice":"GroundRules: Original legal text. Not legal advice."}