{"data":{"id":"us/40-cfr-1042.401","jurisdiction":"us","citation":"40 CFR 1042.401","heading":"General Provisions.","body":"We may perform in-use testing of any engine subject to the standards of this part.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1042—CONTROL OF EMISSIONS FROM NEW AND IN-USE MARINE COMPRESSION-IGNITION ENGINES AND VESSELS","Subpart E—In-use Testing"],"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":"21e39a277ec5fd2e0ed7fba1713a91353c48d2674315fda33080c649943739a1","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-1042.350","next":"us/40-cfr-1042.501"},"notice":"GroundRules: Original legal text. Not legal advice."}