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(a) Every motor vehicle when operated upon any roadway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance not less than 200 feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle.
(b) No vehicle shall be equipped with, nor shall any person use upon a vehicle, any siren, whistle or bell, except that this prohibition shall not apply to: (i) an authorized emergency vehicle as otherwise permitted in the traffic code; (ii) a city-owned or city-leased vehicle equipped with a siren, whistle, air-horn or bell, when such sound equipment is used in accordance with rules or guidelines developed by the Commissioner of Assets, Information, and Services; and (iii) a vehicle equipped with a siren, whistle or bell as otherwise permitted under the Illinois Vehicle Code, codified at 625 ILCS 5/1-100, et seq. when such sound equipment is used in accordance with applicable law.
(Added Coun. J. 7-12-90, p. 18634; Amend Coun. J. 11-26-13, p. 67481, Art. II, § 3; Amend Coun. J. 11-26-19, p. 11390, Art. III, § 15)