The reference case for the whole discipline is Britain's road signs. Jock Kinneir en.wikipedia.org and Margaret Calvert en.wikipedia.org designed the system between 1957 and 1963, first for the Anderson Committee on motorways and then for the Worboys Committee en.wikipedia.org, formed in 1963 to review every other road. They drew a typeface for it, Transport en.wikipedia.org, and worked inside the 1949 Geneva protocol: triangles warn, circles command, rectangles inform.

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