The November/December 2016 issues of the SGIA Journal includes an article entitled "Invasion of the Moratoriums." In it, Rick Hartwig, EHS Specialist, Government and Business Information, SGIA (Specialty Graphics Imaging Association), discusses how moratoriums (which mandate a temporary cessation of new sign permits) are used by municipalities. He outlines their impact on communities and some of the pitfalls.
Typically, SGIA Journal articles are only available to SGIA members/subscribers. However, this particular article was reprinted by permission at http://www.signindustry.com/management/articles/2016-08-01-Sign_Moratoriums.php3