Interstate route signs are characterized by which color pattern?

Interstate route signs are indeed characterized by a red, white, and blue color pattern. This distinctive combination is designed to be easily recognizable and to convey important information to drivers navigating the interstate highway system. The red is typically used for the outline of the shield shape of the sign, while the interior is white, and the blue is often used for certain supplementary information on the sign, such as indicating specific routes or services available. This color scheme not only enhances visibility and recognition during daytime but also contributes to safety by making routing information clear for drivers.