First electric traffic lights installed at Piccadilly.
Title: "The New Lights of London. First electric light traffic controls installed in Piccadilly".
M/S of three workmen installing traffic lights on the corner of a busy street. Lots of traffic and pedestrians pass them as they work. C/U of the traffic lights. M/S of workmen working next to a small wooden hut at the road side, a policeman directs pedestrians around it.