For the duration of any war in which the United States is engaged no person, including without limiting the generality of the word "person" all persons upon an authorized emergency vehicle, shall sound a siren for any purpose. For the purposes of this section, the term "siren" shall not include a foghorn when used for the protection of navigation in and about the Chicago Harbor.
This section shall not apply to any person officially designated by the mayor to sound a siren as an air raid alarm.
Any person violating the provisions of this section shall be fined not less than $100.00 nor more than $200.00 for each offense.
(Prior code § 193-6.1)