Ohio Revised Code Title LV. Roads Highways Bridges § 5529.06

(A) The director of transportation shall develop and implement a program for improving the roadside rest area system along highways of the interstate system and the primary system. Each sanitary facility in the roadside rest area system on the interstate system and at selected locations on the primary system that is upgraded shall have potable water, water flush toilets, and wash basins equipped with running water for the use of the traveling public, in accordance with standards developed by the department of transportation as approved by the appropriate state and federal agencies.

(B) The director shall provide that each sanitary facility in a roadside rest area be kept clean and maintained in a sanitary condition.

(C) The director shall provide for beautification projects along the state highway system.