New Lights O' London -- The new system in action. An experiment in electrically controlled traffic took place in Oxford Street yesterday (July 11th) Seventy four light signals control the traffic at no fewer than twenty one junctions in the mile and a third stretch between the Marble Arch and Tottenham Court Road. September 23, 1931. (Photo by Daily Mirror).;New Lights O' London -- The new system in action. An experiment in electrically controlled traffic took place in Oxford Street yesterday (J