Road rules / 🇬🇧 signs
Why is the stop sign the only octagonal (eight-sided) road sign?
✓ ANSWER
So it can be recognised by shape alone, even if partly obscured
The unique octagonal shape means a stop sign can be recognised even when dirty or partly hidden.
All the options
- ✓So it can be recognised by shape alone, even if partly obscured
- ✗Because it is the oldest sign design
- ✗To make it cheaper to manufacture
- ✗So it fits more text
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