{"data":{"id":"us/40-cfr-201.14","jurisdiction":"us","citation":"40 CFR 201.14","heading":"Standard for retarders.","body":"Effective January 15, 1984, no carrier subject to this regulation shall operate retarders that exceed an adjusted average maximum A-weighted sound level of 83 dB at any receiving property measurement location, when measured with fast meter response in accordance with Subpart C of this part.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER G—NOISE ABATEMENT PROGRAMS","PART 201—NOISE EMISSION STANDARDS FOR TRANSPORTATION EQUIPMENT; INTERSTATE RAIL CARRIERS","Subpart B—Interstate Rail Carrier Operations Standards"],"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":"190f4b79e388222ad5189481fd6692e6bd3d20fae4052a5764409c0396f058ec","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-201.13","next":"us/40-cfr-201.15"},"notice":"GroundRules: Original legal text. Not legal advice."}