Some signs that are visible from controlled highways are exempt from the Outdoor Advertising Control Program. They include:

• Official traffic signs
• Signs advertising the sale or lease of property on which they are located
• Signs advertising the products and activities conducted on the property on which they are located. These signs are referred to as "on premise" signs.
• Signs promoting political candidates or issues shall be placed on private property only and cannot be placed without the permission of the property owner.
• LOGO and TODS signs authorized under the Motorist Information Sign Act.