(a) A county board may adopt regulations requiring the posting of signs designating the areas within 1,000 feet of public and nonpublic elementary and secondary schools as “drug-free school zones”.

(b) The signs shall be designed in order to provide notice of the provisions of § 5-627 of the Criminal Law Article.

(c) In Anne Arundel County, Baltimore City, and Prince George’s County, all new and replacement signs shall include a hotline number to report information concerning suspected illegal drug activity.