{"data":{"id":"us/40-cfr-1066.701","jurisdiction":"us","citation":"40 CFR 1066.701","heading":"Applicability and general provisions.","body":"(a) The procedures of this part 1066 may be used for testing at any ambient temperature. Section 1066.710 describes the provisions that apply for testing vehicles at a nominal temperature of −7 °C (20 °F); these procedures apply for motor vehicles as described in 40 CFR part 86, subpart S, and 40 CFR part 600. For other vehicles, see the standard-setting part to determine if your vehicle is required to meet emission standards outside the normal (20 to 30) °C ((68 to 86) °F) temperature range.\n(b) Do not apply the humidity correction factor in § 1066.615(a) for cold temperature testing.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1066—VEHICLE-TESTING PROCEDURES","Subpart H—Cold Temperature Test Procedures"],"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":"db2011a467af553746242f033029d91e7e35df987c2557c407a105b51823f157","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-1066.695","next":"us/40-cfr-1066.710"},"notice":"GroundRules: Original legal text. Not legal advice."}