§325.21. Scope of the rules in this subpart.
49 C.F.R. § 325.21
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.
Notes, amendments, and revision history
Authority
Authority: 42 U.S.C. 4917; 49 U.S.C. 301; and 49 CFR 1.87.
Source
Source: 40 FR 42437, Sept. 12, 1975, unless otherwise noted.