Because the city is a large, diverse and rapidly expanding municipality, the city council finds that consistent sign control is necessary. The provisions of this title are made to establish reasonable, objective and constitutional time, place, and manner regulations for all signs in the city which are visible to the public. Within those legal constraints, sign regulations adopted under this title are necessary to: protect the general public health, safety, welfare, convenience and aesthetics; to protect and enhance property values; and to protect and enhance the natural setting of the city. At the same time, this title is also intended to reasonably serve the public's need to be given helpful directions and to be informed of available products, businesses and services. (2001 Code § 89-6-1101)