Logo signs (also known as specific service signs or Logo service signs, or colloquially as Big Blue Signs) are blue road signs used on freeways, that display the logos or trademarks of businesses before travelers reach an exit or interchange. Typically, a business pays a small fee to a transportation department (or to a subcontractor of a transportation department such as Lamar Advertising subsidiary Interstate Logos) to have their logos displayed on a large panel alongside other businesses. Depending on the jurisdiction, businesses may have to meet certain criteria such as hours of service and distance from the sign.