🛑 U+1F6D1: the octagonal stop sign emoji, the only traffic sign shaped that way on purpose, plus the ⛔ no-entry circle it keeps getting confused with. Click any symbol to copy it instantly.
The stop sign emoji (🛑, U+1F6D1, officially named OCTAGONAL SIGN) copies the real-world sign's shape for a real reason: the octagon is the only sign silhouette reserved exclusively for "stop" in the US Manual on Uniform Traffic Control Devices, adopted in 1922 specifically so drivers could recognize it from behind, through snow, or in a rearview mirror. No other shape carries that meaning, so the outline alone tells you what to do before you can even read it. Unicode added 🛑 in version 9.0 (2016). It's a red octagon with a white border and no text baked into the glyph, unlike some early carrier emoji that rendered an actual "STOP" label. Most platforms today show a plain shape.
The octagon itself, and the two symbols closest in meaning that aren't the same thing.
Related caution and hazard marks that show up alongside stop signs in signage and messaging.
The punctuation-level equivalents people reach for to add urgency without a full sign glyph.
A Discord nickname stops at 32 characters, an Instagram bio at 150, a TikTok bio at 80, and X weights some characters as two. The UltraTextGen counter reads all of them at once, and counts a multi-codepoint Unicode emoji the way each platform actually bills it.
Open the character counter →The wider set of caution, radiation, and biohazard marks stop signs usually appear next to.
Another sign whose shape alone is the warning, designed in 1966 to be meaningless until you're taught it, then unforgettable.
A different kind of standardized sign glyph, with its own 1968 design history and modern redesign debate.
💢 U+1F4A2.