Ohio Rev. Code Ann. § 5516.10
(A) No person shall do either of the following without first obtaining a permit and permit plates from the director of transportation:
(1) Erect, use, maintain, operate, construct, or cause or permit to be erected, used, maintained, operated, or constructed, any advertising device located in either of the following:
(B) Applications for such a permit shall be made on forms prescribed by the director, and a separate application shall be submitted for each sign face. The director shall adopt rules setting forth the requirements for completion of the application process and the issuance of permits consistent with this section.
(4) Applications for permits shall be disapproved and permits shall not be issued under any of the following conditions:
(F)
(2) A last permit holder's application for a permit shall not be accepted until a permit issued pursuant to division (F)(1) of this section has expired for a period of six months, commencing from the expiration date, for any of the following locations: