You should read about Milton Keynes and its Redways: http://en.wikipedia.org/wiki/Milton_Keynes_redway_system http://en.wikipedia.org/wiki/Milton_Keynes_redway_

You should read about Milton Keynes and its Redways: http://en.wikipedia.org/wiki/Milton_Keynes_redway_system http://en.wikipedia.org/wiki/Milton_Keynes_redway_system - segregated ways for bicycles and pedestrians integrated into a planned city built some 40 years ago.