King County, WA Noise from Specific Sources: Car Alarm Limits (2026)

The frequent, repetitive or continuous sounding of any horn or siren attached to a motor vehicle, except as a warning of danger or as specifically permitted or required by law;

2. Frequent, repetitive or continuous sounds in connection with the starting, operation, repair, rebuilding or testing of any motor vehicle, motorcycle, offhighway vehicle, watercraft or internalcombustion engine;

3. The use of a sound amplifier or other device capable of producing or reproducing amplified sound upon public streets for the purpose of commercial advertising or sales or for attracting the attention of the public to any vehicle, structure, or property or the contents therein, except as permitted by law, and except that vendors whose sole method of selling is from a moving vehicle shall be exempt from this subsection;

4. Loud and raucous sound generated within one thousand feet of any school, hospital, nursing home or convalescent facility;

5. Loud and raucous sound that emanates frequently, repetitively or continuously from any building, structure or property, including watercraft, located within a rural or residential district or on an adjoining body of water, such as sounds originating from a band session or social gathering;