What does the Stop sign mean?
The Stop sign (MUTCD R1-1) is a regulatory sign under the federal Manual on Uniform Traffic Control Devices, the national standard the states build from. The duty is a complete stop, wheels no longer turning, at whichever of these you reach first: a painted stop line, the near edge of the crosswalk, or the point where you can finally see along the cross street. Rolling through slowly breaches it even on an empty road.
Source: MUTCD 11th Edition, Chapter 2B, Table 2B-1, checked 2026-09-09.
What shape and color is the Stop sign?
| MUTCD code | R1-1 |
|---|---|
| Group | Regulatory signs |
| Shape | Octagon |
| Color | Red background, white legend and border |
What an octagon means. Stop, and nothing else. It is the only eight-sided sign, so the shape alone identifies it in fog, in the dark, or from behind when the legend is not readable.
What red means. Stop, yield, or a prohibition. Red never advises, it always forbids or commands.
Regulatory signs. Every sign in this group has a statute behind it, so disobeying one is a citable offense on its own. Permit tests tend to word them as a duty you owe rather than show you the face.
What is the Stop sign often mistaken for?
Yield (R1-2) is the only other non-rectangular red sign and requires slowing, not stopping. Stop Ahead (W3-1) is a yellow diamond and is only a warning that a stop sign is coming, not an instruction to stop where it stands.
|  |  |
|---|---|---|
| GroupRegulatory signs | GroupRegulatory signs | GroupWarning signs |
| ShapeOctagon | ShapeEquilateral triangle, point down | ShapeDiamond |
| ColorRed background, white legend and border | ColorWhite background, wide red border, red legend | ColorYellow background, black border, red octagon symbol |
| What it meansThe duty is a complete stop, wheels no longer turning, at whichever of these you reach first: a painted stop line, the near edge of the crosswalk, or the point where you can finally see along the cross street. | What it meansPriority belongs to whatever is already using the road you want, vehicles and pedestrians alike. | What it meansThere is an octagon beyond this point that a driver at speed will not pick out in time. |
What does the permit test ask about the Stop sign?
These 2 questions are from the practice bank, with the answer marked.
You arrive at this sign. What must you do?
- A.Slow down and continue if nothing is coming
- B.Come to a complete stop, then go when the way is clear(correct answer)
- C.Stop only if another vehicle is already waiting
- D.Yield to traffic on your left and proceed
Source: MUTCD R1-1
An eight-sided (octagonal) sign always means:
- A.Yield
- B.Stop(correct answer)
- C.Do not enter
- D.Railroad crossing
Why: The octagon is reserved for STOP alone. Shape is deliberately unique so the sign is readable in fog, at night, or when snow covers the face.
Source: Federal MUTCD, 11th Edition (FHWA)
What are the other regulatory signs?
All 39 regulatory signs on one page, or every US road sign by shape and color.
Test yourself on this sign and the rest of the set with a road signs practice test for Florida, Texas or California.
The artwork is the federal design itself, which the manual dedicates to the public domain in MUTCD 11th Edition, Part 1, Section 1D.06, checked 2026-09-09. The Interstate Shield, the 511 pictograph and the National Scenic Byway graphic are named exceptions and are not reproduced anywhere on this site.
Source: Manual on Uniform Traffic Control Devices, 11th Edition. Not affiliated with or endorsed by the Federal Highway Administration or any state agency.