Traffic Light Tree

Traffic Light Tree is a public sculpture in between Poplar and Blackwall, London, England, created by the French sculptor Pierre Vivant following a competition run by the Public Art Commissions Agency for the London Docklands Development Corporation under their Public Art programme. Originally situated on a roundabout in Limehouse, near Canary Wharf and Millwall, at the junction of Heron Quay, Marsh Wall and Westferry Road, it is now located on a different roundabout near Billingsgate Market in Poplar.

Eight metres tall and containing 75 sets of lights, each controlled by computer, the sculpture was described by Vivant thus:

Source: Wikipedia