Pierre Vivant's Traffic Light Tree was created by the Public Art Commissions Agency. I imagine this would confuse tourists considerably; traffic circles are confusing enough, even for veteran drivers. The light cycles of the Traffic Light Tree are meant to mimic the constant action at Canary Wharf.
Implications - Inventor Pierre Vivant claims the sculpture follows the rhythmic patterns of surrounding activities, whether they are commercial, professional or domestic. The sculpture is intended to imitate the London Plane Trees which lie adjacently to it.