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Regulations last checked for updates: Jan 08, 2026
Title 49 - Transportation last revised: Jan 01, 2026
All Titles
Title 49
Chapter III
Part 325
Subpart A - Subpart A—General Provisions
§ 325.1 - Scope of the rules in this part.
§ 325.3 - [Reserved]
§ 325.5 - Definitions.
§ 325.7 - Allowable noise levels.
§ 325.9 - Measurement tolerances.
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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