Dunwoody, GA Noise Ordinances: Vehicle Noise (2026)
Key Facts
- Horn rule
- City Code § 18-19(b)(1)
- Exhaust rule
- City Code § 18-19(b)(7), stationary engines/motorboats
- Defective vehicle rule
- City Code § 18-19(b)(8)
- Horn limits
- No exhaust-operated horns, no honking in traffic jams
- Vehicle noise standard
- Loud grating, grinding or rattling noise prohibited
Summary
Dunwoody's noise ordinance bars unnecessary horn use, exhaust discharged without an effective muffler, and any vehicle so out of repair or loaded that it creates loud grating, grinding or rattling noise, treating each as a separate nuisance violation under City Code § 18-19(b)(1), (7) and (8).
(1)Horns, signaling devices. The sounding of any horn or signaling device on any automobile, motorcycle, or other vehicle on any street or public place in the city, except as a danger warning; the creation of any unreasonably loud or harsh sound by means of any signaling device; the sounding of any device for an unnecessary and unreasonable period of time; the use of any signaling device except one operated by hand or electricity; the use of any horn, whistle or other device operated by engine exhaust; and the use of any signaling device when traffic is for any reason held up. ... (7)Exhausts. The discharge into the open air of the exhaust of any steam engine, stationary internal combustion engine or motorboat except through a muffler or other device which will effectively prevent loud or explosive noises therefrom. (8)Defect in vehicle or load. The use of any automobile, motorcycle, or vehicle so out of repair, so loaded, or in a manner as to create loud and unnecessary grating, grinding, rattling, or other noise.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 49).
Full Breakdown
Dunwoody's noise ordinance addresses vehicle noise through three separate items in its 17-clause list of per se violations. Item (1), horns and signaling devices, makes it unlawful to sound a horn except as a danger warning, to create an unreasonably loud or harsh signal sound, to sound a device for an unnecessary or unreasonable period, to use a signaling device not operated by hand or electricity, which rules out horns or whistles operated by engine exhaust, or to sound a horn simply because traffic is held up.
Item (7), exhausts, requires that the exhaust of any steam engine, stationary internal combustion engine, or motorboat be discharged through a muffler or other device that effectively prevents loud or explosive noise; as written it targets stationary engines and motorboats rather than every moving car. The clause that actually reaches an ordinary car or motorcycle with a damaged muffler or a rattling load is item (8), defect in vehicle or load, which makes it unlawful to operate any automobile, motorcycle, or vehicle so out of repair, so loaded, or driven in a manner that creates loud and unnecessary grating, grinding, rattling, or other noise.
Together the three clauses give Dunwoody police separate hooks for an aggressive horn, an unmuffled stationary engine or boat motor, and a car or bike that is simply falling apart or overloaded and noisy as a result.
Violations & Fines
A citation under § 18-19(b)(1), (7) or (8) is charged as a noise-ordinance nuisance violation, with each day a defective muffler or habitual horn-honking continues counted as a separate offense and subject to a fine under the Code's general penalty provision, in addition to any separate traffic citation for the underlying vehicle defect.
Frequently Asked Questions
Is honking a car horn illegal in Dunwoody?
Does Dunwoody's exhaust rule cover a loud car muffler?
Can an overloaded truck be cited for noise in Dunwoody?
Sources & Official References
Other rules in Dunwoody
Compare Dunwoody to another location·View the Georgia noise ordinances overview
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