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location_onRockville, MD
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Rockville, MD
Noise Ordinance Overview

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Official Decibel Limits

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Residential Day
65dB
Residential Night
55dB

"Limits apply at the receiving property line. If ambient noise exceeds the maximum allowable level, the standard is adjusted to ambient + 3 dBA."

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AI Executive Summary

Gemini AI

Rockville, MD, noise ordinances are primarily governed by Montgomery County's Chapter 31B and supplemented by Chapter 7 of the City Code. They establish specific decibel limits for residential and commercial areas during the day and night, alongside restrictions on construction, amplified sound, and other noise disturbances, enforced by the Department of Environmental Management and police.

Specific Noise Restrictions

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Construction

Permitted 7 AM - 7 PM weekdays and 9 AM - 5 PM weekends. Noise levels must not exceed 75 dBA, or 85 dBA if a noise-suppression plan is approved.

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Amplified Sound

From bars or restaurants, must not exceed 60 dBA between 10 PM - 7 AM. Operating radios, televisions, or other electronic sound-producing devices exceeding 55 dBA at the residential receiving property line is illegal during quiet hours.

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Animals

It is unlawful to allow an animal to create a noise disturbance, such as a barking dog.

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Vehicles

Noises from motorized vehicles on public roadways are regulated under the State Motor Vehicle Code by the Police, not the Montgomery County Noise Control Law. Maryland and federal regulations establish a maximum sound limit of 80 decibels for vehicles.

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Leaf Blowers

Must not exceed an average sound level of 70 dBA at 50 feet. After July 1, 2024, gas-powered leaf blowers and vacuums may not be sold in Montgomery County, and after July 1, 2025, they may not be used.

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Unlawful during 'quiet hours' if sound exceeds 55 decibels (Montgomery County).

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