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Noise from Specific Sources

Dearborn's Noise from Specific Sources: The Rules That Matter

By CityRuleLookup Editorial Team

Every city handles noise from specific sources a little differently. In Dearborn, Michigan, there are 4 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Delivery Truck Noise

Dearborn bars loud loading and unloading of boxes, crates and containers between 10 p.m. and 7 a.m. when it disturbs a residential property line, directly covering nighttime delivery-truck noise.

Key details: Governing section: Code § 13-45(4). Restricted hours: 10 p.m.-7 a.m.. First offense fine: $100 civil infraction. Enforcement: Dearborn Police Dept..

First offense: $100 civil infraction. Second (within 6 mo.): $200. Third+: misdemeanor, up to $500 and 45-90 days jail.

Generator Noise

Dearborn caps generator noise from street vendors at 80 decibels, measured 15 feet from the machine, under the city's street vendor ordinance.

Key details: Decibel limit: 80 dB maximum. Measured at: 15 feet from generator. Applies to: Street vendors and food trucks. Checked at: Pre-license fire inspection.

Running a generator above 80 decibels at 15 feet violates § 12-240(h) and can be grounds for citation or license suspension under the vendor and food truck ordinances.

HVAC & Mechanical Noise

Air conditioners, heat pumps, fans, and refrigeration units count as regulated "fixed noise sources" in Dearborn and must stay within the noise ordinance's continuous-sound limits: 45 dB(A) at night, 50 dB(A) by day in residential areas.

Key details: Regulated as: fixed noise source, § 13-42. Residential night limit: 45 dB(A), 10pm-7am. Residential day limit: 50 dB(A), 7am-10pm. Measured at: receiving property boundary line. First-offense fine: $100 civil infraction.

Civil infraction: $100 first offense, $200 second offense within 6 months; third offense becomes a misdemeanor, $250 fine and up to 45 days; fourth and subsequent up to $500 fine and 90 days.

Bar & Nightclub Noise

Dearborn caps indoor sound at bars, nightclubs and other places of public entertainment at 95 dB(A) measured at any spot a customer occupies, unless the venue posts a warning sign about hearing impairment. Code of Ordinances § 13-45(6) is a distinct rule from the property-line noise curfews, and violators face the same escalating fine schedule as every other Article II noise offense.

Key details: Interior sound cap: 95 dB(A) without warning sign. Meter setting: Slow response, at customer location. Required sign text: 'WARNING! SOUND LEVELS...HEARING IMPAIRMENT.'. Governing section: Code of Ordinances § 13-45(6). First offense fine: $100 civil infraction.

A first violation of § 13-45(6) is a $100 civil infraction under § 13-47's fine schedule, rising to $200 for a second offense within six months. A third offense within six months of the second is a misdemeanor punishable by up to $250 and 45 days in jail, and a fourth or later offense in that same window carries up to $500 and 90 days.

The Bottom Line

Dearborn's noise from specific sources rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Dearborn is broadly strict or permissive.

All of the above reflects Dearborn's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.