Circular signs with a red outline are prohibition signs (ie you _must_ not do th... | Hacker News

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		4ndrewl 72 days ago \| parent \| context \| favorite \| on: How Britain built some of the world’s safest roads Circular signs with a red outline are prohibition signs (ie you _must_ not do this). Triangular signs with a red outline are warning signs.

tengwar2 70 days ago [–]

Circular blue signs are orders (i.e. you must do this).

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