(1) The information displayed on specific information signs must be repeated on supplemental directional signs when the qualified businesses identified on the specific information signs are not visible to traffic at the exit ramp terminus.

(2) Where the qualified business is located more than one mile from the interchange, mileage must also be given on the supplemental directional sign.

(3) The franchisee shall determine if a qualified business is visible from the traveled way, subject to review by the department.

(4) Supplemental directional signs shall be located on the highway right-of-way along the interchange ramp or at the ramp terminal.

(5) The exact location of the supplemental directional signs shall be determined by the franchisee, subject to review by the department.

(6) A minimum of 100 feet is required between successive supplemental directional signs.

(7) Supplemental directional signs shall conform to the specifications stated in the contract between the department and the franchisee.