(a) The provisions of this chapter shall not apply to the following:
(1) The emission of sound for the purpose of alerting persons to the existence of an emergency, or the emission of sound in the performance of emergency work.
(2) Warning devices necessary for the protection of public safety.
(b) The provisions of this chapter shall not abrogate or supersede any other provision of the Codified Ordinances including but not limited to Section 509.10 which shall remain in full force and effect. (Ord. 554. Passed 12-27-79.)