What does a sign with a white message on a brown or blue background indicate?

• It provides information such as the distance to a destination.
• It displays a regulatory message, such as a speed limit.
• It indicates the location of fuel, food, lodging, or roadside assistance.
  Explanation:

  "Signs with white lettering on a blue or brown background provide informational guidance. Blue signs indicate essential roadside services such as fuel, food, lodging, or medical assistance, while brown signs direct drivers to recreational or cultural sites."
• It is used to show lane control instructions for drivers.