What background color is used for signs indicating road user services, like food and gas?

The background color used for signs indicating road user services, such as food and gas, is blue. This designation helps drivers easily identify essential services available along the roadway. Blue signs are specifically utilized to display information related to travel, including accommodations, restaurants, and fuel stations, thereby guiding road users to services that enhance their travel experience. This consistent use of blue for service signs makes it easier for drivers to locate amenities quickly and minimizes confusion while navigating roads. Blue signage effectively signals non-emergency services to support motorists on their journeys.