US Route Marker
Category
Guide & Service
Shape
Shield
Color
Black on white
This white shield marks a US federal highway route. The black number tells you which national route you are on. These highways connect towns and cities across the country.
Common test question
On the DMV permit test you may be shown this sign and asked “What does this sign mean?” The answer is US Route Marker. Recognize it by its shield shape and black on white colors — a hallmark of guide & service signs.
Practice with the Road Signs Quiz →