(A)   In the event of an existing or threatened state of emergency endangering the lives, safety, health, and welfare of the people within the municipality, or threatening damage to or destruction of property, the Mayor is empowered to issue a public proclamation declaring to all persons the existence of such a state of emergency, and, in order to more effectively protect the lives and property of people within the municipality, to place in effect any or all of the restrictions authorized by this chapter.
   (B)   The Mayor is authorized and empowered to limit by such proclamation the application of all or any part of such restrictions to any area specifically designated or described within the municipality and to specific hours of the day or night; and to exempt from all or any part of such restrictions law enforcement officers, firemen, and other public officers and employees, doctors, nurses, employees of hospitals, and other medical facilities; on-duty military personnel whether state or federal; on-duty employees of public utilities, public transportation companies, and newspaper, magazine, radio broadcasting, and television broadcasting corporations operated for profit; and such other classes of persons as may be essential to the preservation of public order and immediately necessary to serve the safety, health, and welfare needs of the people within the municipality.
('81 Code, § 92.02)