{"data":{"id":"us/40-cfr-202.11","jurisdiction":"us","citation":"40 CFR 202.11","heading":"Effective date.","body":"The provisions of Subpart B shall become effective October 15, 1975, except that the provisions of § 202.20(b) and § 202.21(b) of Subpart B shall apply to motor vehicles manufactured during or after the 1986 model year.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER G—NOISE ABATEMENT PROGRAMS","PART 202—MOTOR CARRIERS ENGAGED IN INTERSTATE COMMERCE","Subpart A—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":"82e84fde4ec2afd31c28994eba77a90c4c062d51a7fa6176cc866678896d2109","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-202.10","next":"us/40-cfr-202.12"},"notice":"GroundRules: Original legal text. Not legal advice."}