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Regulations last checked for updates: May 14, 2025
Title 49 - Transportation last revised: Mar 20, 2025
All Titles
Title 49
Chapter III
Part 325
Subpart E - Subpart E—Measurement of Noise Emissions; Stationary Test
§ 325.51 - Scope of the rules in this subpart.
§ 325.53 - Site characteristics; stationary test.
§ 325.55 - Ambient conditions; stationary test.
§ 325.57 - Location and operation of sound level measurement systems; stationary test.
§ 325.59 - Measurement procedure; stationary test.
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.
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