Columbia Horns and signaling devices ordinance (§ 16-257)

The sounding of any horn or signaling device on any automobile, motorcycle or other vehicle on any street or public place of the city, except as a danger warning; the creating by means of any such signaling device of any unreasonably loud or harsh sound; the sounding of any such device for an unnecessary and unreasonable period of time; the use of any signaling device except one operated by hand or electricity; the use of any horn, whistle or other device operated by engine exhaust; and the use of any such signaling device operated by engine exhaust; and the use of any such signaling device when traffic is for any reason held up, is hereby declared unlawful.