7-7-2: HORNS AND WARNING DEVICES 1 :
   A.   Horn Required: Every motor vehicle, when operated on a roadway within the city, shall be equipped with a horn in good working order capable of emitting sound audible under normal conditions from a distance of at least two hundred feet (200'). (1984 Code § 23-64)
   B.   Warning Devices On Emergency Vehicles: All emergency vehicles, including police and fire department vehicles, and every ambulance used for emergency calls, shall be equipped with a bell, siren or exhaust whistle. (1984 Code § 23-72)
   C.   Certain Warning Devices Prohibited: Except as otherwise provided in this chapter, no motor vehicle shall be equipped with and no person shall use on any such vehicle any siren, compression or spark plug whistle, exhaust horn or whistle which does not produce a harmonious sound or which closely resembles those used on emergency vehicles.
No person shall use any horn or other warning device otherwise than as a reasonable warning to traffic or make any unnecessary or unreasonably loud or harsh sound by means of any such horn or warning device. (1984 Code § 23-73)

 

Notes

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1. SDCL § 32-15-10.