Code of Federal Regulations · Section
§ 325.27 — Use Of A Windscreen
49 C.F.R. § 325.27
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A properly installed windscreen, of the type recommended by the manufacturer of the Sound Level Measurement System, shall be used during the time that noise emission measurements are being taken.
Authorizing Statute
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Leadership, consultation, and cooperation49 U.S.C. § 301
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Motor carrier noise emission standards42 U.S.C. § 4917