The strangest part of London's planned inner Motorway Box - not just because it's nothing like the other three sides, but also because it actually got built.
Ringway 1 would have been one of the largest inner ring roads the world had ever seen: an urban motorway encircling about sixty square miles of central London, including the whole of the City, Westminster and all of the present-day Congestion Charging zone, plus almost all of its docklands and the East End.
The Greater London Council's 1960s masterwork created a vision for a new London ringed with urban motorways - and when it was published, it seemed utterly unstoppable.
The 1940s and 50s were an era of growing traffic and growing institutional panic about the state of London's roads. The suggested fixesย were the precursor to London's urban motorway plans of the 60s.
A whistle-stop tour of the motor age, from the turn of the twentieth century to the present. No pedestrians, horse drawn vehicles, invalid carriages or motorcycles under 50cc please.
The very first motorway was eight miles of relief for the Lancashire town of Preston. It goes without saying that there's an interesting story to be told about it.
This is the story of one man at Oxfordshire County Council who pre-empted the development of modern road signs - much to the annoyance of the men from the Ministry.