Stop Sign

The Stop sign is the only octagonal sign in the system — its unique shape lets it be recognised even from the back or in poor light. It demands a complete halt every time, regardless of whether other traffic is present.

Meaning

Octagonal red sign with white border and the word STOP.

Required driver response

Come to a complete stop at the stop line, yield to all cross traffic and pedestrians, and proceed only when safe.

Question patterns

  • “What does this sign mean?” — recognition of meaning.
  • “What must you do when you see this sign?” — required response.
  • Distractor trap: rolling through without stopping fully (treating it like a yield).

Ontology Stop Sign [part-of] Regulatory Signs

Connections

Sources