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Horns and warning devices.

Seattle Mun. Code § 11.84.320
in effect
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11.84.320 - Horns and warning devices. Every motor vehicle when operated upon a street shall be equipped with a horn in good working order and capable of emitting sound audible under conditions of no background noise from a distance of not less than two hundred feet (200'), but no horn or other warning device shall emit an unreasonably loud or harsh sound which exceeds eighty-five (85) dB(a) at two hundred feet (200'). The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use such horn when upon a street or alley. (RCW 46.37.380) (Ord. 108200, § 2(11.84.320), 1979.)
Source: City of Seattle, Seattle Municipal Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/wa/seattle/codes/municipal_code?nodeId=TIT11VETR_SUBTITLE_ITRCO_PT8EQRE_CH11.84BRMIEQ_11.84.320HOWADEFetched: 11/1/2026

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