The regulation of outdoor advertising has prompted a surprisingly prodigious amount of controversy and litigation. It has been challenged as a denial of free speech, due process, and equal protection; it has been upheld on nuisance4 and real property grounds, and sustained on the basis of public health, safety, morality, comfort and convenience, aesthetics, and the right to be let alone."
Billboard Regulations, and Aesthetics,
21 Clev. St. L. Rev.
available at http://engagedscholarship.csuohio.edu/clevstlrev/vol21/iss2/19