The Genius who put British Road Traffic Signs on the Map

How a South African woman designed the Digging Workman & Blue Motorway Signs that shaped the face of the Country Margaret Calvert has done more than any other living person to shape the face of Brittain – and, in doing so, stopped a million marital arguments on journeys accross the country. Yet you have probably never heard the name and only now is her amazing talent being recognised.

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