It is recognized that signs perform important functions in identifying residences and businesses. It is hereby found and declared, however, that minimum control of signs is necessary to promote the health, safety, and general welfare by lessening hazards to pedestrian and vehicular traffic, by preserving property values, by preventing unsightly and detrimental development which has a blighting influence upon residential, business, and industrial uses, by preventing signs from reaching such excessive size that they obscure one another to the detriment of all concerned, and by securing certain fundamentals of design for the Township, except as otherwise permitted.