Notwithstanding any other provisions of § 27-74-203, signs, displays, and devices which are located more than six hundred sixty feet (660') from the nearest edge of the right-of-way of interstate and primary highways, outside of urban areas, visible from the main-traveled way of the highways and erected with the purpose of their message being read from the main-traveled way shall be limited to:
(1) Directional and other official signs as defined herein;
(2) Signs advertising the sale or lease of property on which they are located;
(3) Signs advertising activities conducted on the property on which they are located; and
(4) Signs, displays, and devices which locate, identify, mark, or warn of the presence of pipelines, utility lines, or rail lines and appurtenances thereto, including, but not limited to, markers used in maintenance, operation, observation, and safety.