US route sign: what it means
The U.S. Route sign shows a road that is part of the U.S. numbered highway system. The black number on the white shield is the route number.
What does the U.S. Route sign mean?
MUTCD Section 2D.11 says U.S. Route signs have black numerals on a white shield surrounded by a black rectangle. The Interstate and U.S. highway systems are numbered by AASHTO on the recommendation of the states (Section 2D.09).
Quick quiz
What does the sign at the top of this page mean?
- A route of the US highway system.
- The direction of the route: north, east, south or west.
- Directions to a place.
Show answer
A. A route of the US highway system. A route of the U.S. numbered highway system (MUTCD Section 2D.11). Source: MUTCD 11th Edition, Chapter 2D, Guide Signs: Conventional Roads: Sections 2D.09, 2D.11, FHWA; MUTCD 11th Edition, FHWA
Where will you see it?
Along U.S. routes and at junctions with them, often with a direction plaque such as NORTH above it.
What should you do?
Use the route number and the direction plaque together to stay on your route.
What do people get wrong?
Mixing it up with the Interstate sign, which uses a different shield. A U.S. Route sign has black numbers on a white shield on a black square.
Common questions
Who numbers U.S. routes?
AASHTO, on the recommendation of the state highway agencies (MUTCD Section 2D.09).
What do state route signs look like?
Each state designs its own. MUTCD Section 2D.11 says they should be similar in size to the U.S. Route sign.
Compare with
Cardinal direction plaqueThe direction of the route: north, east, south or west.
Destination signDirections to a place.
Want to test someone else? Play a road-sign quiz with friends and family.
Sources
Checked on 3 November 2026 against the MUTCD 11th Edition (FHWA), Sections 2D.09 and 2D.11.
- MUTCD 11th Edition, Chapter 2D, Guide Signs: Conventional Roads: Sections 2D.09, 2D.11, FHWA
- MUTCD 11th Edition, FHWA. FHWA lists the current version as the 11th Edition with Revision 1, dated December 2025
Sign pictures are our own simplified drawings of the MUTCD designs, which are in the public domain (MUTCD Section 1D.06). Sources and image credits.