This map shows the route of the Ring Road, not perfectly to scale but accurately enough to demonstrate the size of its junctions in comparison to the spaces between them. It also includes a couple of roads inside the ring to demonstrate just how tightly the road is drawn around the city centre.
What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?
It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.
Those funny black and yellow symbols are everywhere - and they might just get you back on track one day.
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