49 CFR 325.27 - Use of a windscreen.

Regulations last checked for updates: Feb 10, 2026

Title 49 - Transportation last revised: Feb 03, 2026

View all text of Subpart C [§ 325.21 - § 325.27]

§ 325.27 - Use of a windscreen.

A properly installed windscreen, of the type recommended by the manufacturer of the Sound Level Measurement System, shall be used during the time that noise emission measurements are being taken.

authority: 42 U.S.C. 4917; 49 U.S.C. 301; and 49 CFR 1.87

source: 40 FR 42437, Sept. 12, 1975, unless otherwise noted.

cite as: 49 CFR 325.27