R1-1 is the red octagonal STOP sign. R1-2 is the downward-pointing triangular YIELD sign with a red border and white center. An ALL-WAY plaque can supplement STOP where the applicable intersection control requires it. Other R1 signs address pedestrian crossings and related priority controls.
At a glance
| Sign | Designation | Distinctive design |
|---|---|---|
| STOP | R1-1 | Red octagon with white legend and border |
| YIELD | R1-2 | Downward-pointing triangle with red border and white center |
| ALL-WAY plaque | R1-3P | Supplemental plaque used with STOP where applicable |
| Yield/stop to pedestrians | R1-5/R1-6/R1-9 families | Regulatory crossing controls in several mounting formats |
Exclusive shapes improve recognition
STOP and YIELD use shapes reserved for those controls. The silhouette helps recognition before the legend can be fully read and distinguishes these high-priority instructions from ordinary rectangular regulatory signs.
Plaques are not interchangeable
An ALL-WAY plaque conveys a specific condition when used with STOP. Other plaques can identify traffic direction or conditions. Use only the plaque designated for the intended application and read the full assembly together.
Related R1 signs
The R1 family also contains signs for yielding or stopping at pedestrian and trail crossings, overhead applications, and priority conditions. Browse the Regulatory category in the Sign Library to compare them.
Frequently asked questions
What is the code for a STOP sign?
R1-1 is the standard STOP sign designation.
What is the code for a YIELD sign?
R1-2 is the standard YIELD sign designation.
What does an ALL-WAY plaque mean?
It supplements STOP control to indicate the applicable all-way stop condition at the intersection.