(a) There is authorized to be established a system of specific service signs within the rights-of-way of highways on the interstate system and on adjoining public roads in the vicinity of the highways for the purpose of advising the traveling public of specific business establishments within certain eligible categories. Multi-lane, fully controlled-access roads are permitted to participate in the specific service sign system in accordance with the guidelines established for the program, and the commissioner of transportation is directed to add the roads to the system. If space is available, a specific business establishment shall not be excluded from participating in the specific service sign program because the establishment does not serve breakfast. The establishment may occupy any available space on a specific service sign if doing so would not exclude a business establishment that does serve breakfast.

(b) The specific service signs shall be within the guidelines prescribed by the Manual on Uniform Traffic Control Devices.

(c) As portions of State Route 840 are opened, these portions shall be included in the specific service sign program provided for in this part; provided, that eligibility of interchanges and businesses for participation in this program shall be determined in accordance with regulations that the commissioner has promulgated pursuant to this part.

(d)

(1) Notwithstanding any provision of this part to the contrary, the commissioner of transportation is authorized, subject to the approval of the federal highway administration, to erect specific service signs at Exit 1 (United States Highway 41) on Interstate Highway 75 in Hamilton County; provided, however, that, due to safety considerations, no more than one (1) sign panel may be erected on either approach to the exit and the categories of specific service signs available shall be limited to food and lodging.

(2) Notwithstanding any provision of this part to the contrary, the commissioner of transportation is authorized to erect specific service signs at Exit 1 (United States Highway 41) on Interstate 24 and 75 in Hamilton County to provide one (1) sign panel for the categories of gas and camping.