49 CFR § 227.113 - Noise operational controls.

---
identifier: "/us/cfr/t49/s227.113"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 227.113 - Noise operational controls."
title_number: 49
title_name: "Transportation"
section_number: "227.113"
section_name: "Noise operational controls."
chapter_name: "FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "227"
part_name: "OCCUPATIONAL SAFETY AND HEALTH IN THE LOCOMOTIVE CAB"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 20103, 20103 note, 20166, 20701-20703, 21301, 21302, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89."
regulatory_source: "71 FR 63123, Oct. 27, 2006, unless otherwise noted."
cfr_part: "227"
---


# 227.113 Noise operational controls.

(a) Railroads may use noise operational controls at any sound level to reduce exposures to levels below those required by Table A-1 of appendix A of this part.

(b) Railroads are encouraged to use noise operational controls when employees are exposed to sound exceeding an 8-hour TWA of 90 dB(A).