Variances are intended to resolve practical difficulties or unusual physical hardships that may result from the size, shape, or dimensions of a site or the location of existing structures thereon, from geographic, topographic or other physical conditions on the site or in the immediate vicinity or from street locations or traffic conditions in the immediate vicinity of the site, or if the strict application of this Title will deprive such property of privileges enjoyed by other properties in the vicinity and under identical zone classification. Such a variance shall be subject to such conditions as will assure that the adjustment thereby authorized shall not constitute the grant of a special privilege, except as indicated below, inconsistent with the limitations upon other properties in the vicinity and zone in which the property is situated. Upon application in proper form, such variances may be granted as will not be contrary to the general intent of this Title or the public interest.