Joliet sets specific decibel limits for motor vehicles under Section 21-134: passenger cars limited to 74 dB(A) on streets with 35 mph limits and 82 dB(A) on faster roads, measured at 50 feet. Motorcycles limited to 80/86 dB(A). No general residential property-line decibel limits are established.
Joliet Code of Ordinances Section 21-134 establishes detailed sound emission standards for motor vehicles. Passenger cars and vehicles under 8,000 lbs GVW are limited to 74 dB(A) on streets with 35 mph speed limits or less (76 dB(A) on grades over 3%), and 82 dB(A) on roads over 35 mph (85 dB(A) with snow tires), measured at 50 feet from the centerline. Vehicles over 8,000 lbs are limited to 86 dB(A) on slower roads and 90 dB(A) on faster roads. Motorcycles are limited to 80 dB(A) on slower roads and 86 dB(A) on faster roads. Off-road motorcycles on business or residential property are limited to 82 dB(A). The city does not set general residential property-line decibel limits for non-vehicular noise; instead relying on the nuisance standard in Section 21-7.
Fines up to $750 per offense under Section 1-8. Testing per SAE Standards J986, J331.
Joliet, IL
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