Title 49

PART 325 SUBPART D

Subpart D - Measurement of Noise Emissions; Highway Operations

• 42 U.S.C. 4917; 49 U.S.C. 301; and 49 CFR 1.87.
• 40 FR 42437, Sept. 12, 1975, unless otherwise noted.

49:5.1.1.1.3.4.1.1	SECTION 325.31	325.31 Scope of the rules in this subpart.
49:5.1.1.1.3.4.1.2	SECTION 325.33	325.33 Site characteristics; highway operations.
49:5.1.1.1.3.4.1.3	SECTION 325.35	325.35 Ambient conditions; highway operations.
49:5.1.1.1.3.4.1.4	SECTION 325.37	325.37 Location and operation of sound level measurement system; highway operations.
49:5.1.1.1.3.4.1.5	SECTION 325.39	325.39 Measurement procedure; highway operations.

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