49 CFR 325.21 - Scope of the rules in this subpart.

Regulations last checked for updates: May 03, 2025

Title 49 - Transportation last revised: Mar 20, 2025

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

§ 325.21 - Scope of the rules in this subpart.

The rules in this subpart specify criteria for sound level measurement systems which are used to make the sound level measurements specified in subpart D and subpart E of this part.

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 325.21