Union City's noise ordinance restricts vehicle horns and treats excessive vehicle noise as a disturbance, while in-motion vehicle and muffler noise is governed by the California Vehicle Code, which preempts local sound-limit rules.
UCMC 9.40.043(C) bars using vehicle horns or other loud warning devices when the vehicle is at rest or when no danger to life, health, or property is imminent. A vehicle defines as any device by which a person or property may be moved on a street (9.40.030(K)), and a noisy vehicle on private property can be a noise disturbance under 9.40.040. However, noise from vehicles operated on public streets, including muffler, exhaust, and modified-exhaust limits, is set by the California Vehicle Code (Veh. Code sections 27150-27160), enforced by police rather than the city code. Union City does not set its own roadway decibel limits.
Improper horn use or a vehicle noise disturbance is an infraction under UCMC 9.40.121. On-street muffler and exhaust violations are cited under the California Vehicle Code by law enforcement.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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Union City does not restrict backyard composting, and its Water Efficient Landscape ordinance (UCMC 18.112) requires compost in permitted landscape installat...
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Union City has no ordinance banning artificial turf on private property, and California Civil Code 4735 voids HOA rules prohibiting synthetic grass. For perm...
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Union City's Water Efficient Landscape ordinance (UCMC Chapter 18.112) implements California's MWELO. New landscapes of 500+ sq ft and rehab projects of 2,50...
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Union City does not prohibit residential rainwater capture. California's Rainwater Capture Act allows rooftop collection without a water right, and the City'...
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Union City's water purveyor is the Alameda County Water District (ACWD), serving the Tri-City area. ACWD enforces permanent water-waste prohibitions year-rou...
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All weeds on streets, sidewalks, and private property in Union City are declared a public nuisance under UCMC Chapter 7.08. The Fire Chief gives a ten-day no...
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