(1) Specific information (LOGO) signs or mainline signs may be erected and maintained within the right-of-way of the interstate highway system.

(2) Specific information (LOGO) signs shall be installed between the preceding interchange and at least 800 feet in advance of the exit direction sign at the interchange from which the services are available.

(3) The exact location of specific information (LOGO) signs and specific service ramp signs shall be determined by the franchisee, subject to approval by the department; however, the signs shall be located so as to avoid conflict with other signs within the highway right-of-way. Lateral clearance and height shall be as specified in the MUTCD.

(4) Spacing between each specific information sign shall be not less than 800 feet, or more than 1,000 feet unless there are other intervening signs or other significant site considerations.

(5) Specific information signs shall be located at least 800 feet from existing highway guide signs.

(6) Specific information signs may not be erected at an interchange where an exit ramp is provided but no convenient reentry ramp exists in the same direction of travel.

(7) Specific information signs may not be erected on interchanges where interchange ramps connect directly to another interstate highway, except where the interstate highway connects to an interstate spur.

(8) Specific information signs shall be erected with a lateral offset equal to or greater than existing guide signs, and they should be at least 30 feet from the edge of the traveled way, where possible.

(9) Specific information (LOGO) signs shall be located to take advantage of natural terrain, to have the least impact on the scenic environment, and to avoid visual conflict with other signs within the highway right-of-way.