40 CFR § 201.14 - Standard for retarders.

---
identifier: "/us/cfr/t40/s201.14"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 201.14 - Standard for retarders."
title_number: 40
title_name: "Protection of Environment"
section_number: "201.14"
section_name: "Standard for retarders."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "G"
subchapter_name: "NOISE ABATEMENT PROGRAMS"
part_number: "201"
part_name: "NOISE EMISSION STANDARDS FOR TRANSPORTATION EQUIPMENT; INTERSTATE RAIL CARRIERS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Noise Control Act of 1972, sec. 17(a), 86 Stat. 1234 (42 U.S.C. 4916(a))."
regulatory_source: "45 FR 1263, Jan. 4, 1980, unless otherwise noted."
cfr_part: "201"
---


# 201.14 Standard for retarders.

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.

[45 FR 1263, Jan. 4, 1980; 47 FR 14709, Apr. 6, 1982]