Wow - we really do live in changing times. The city of Arusha got their first set of traffic lights (also known locally as robots) installed last month on three out of the four roads that make up the Sanawari intersection. It sounds like they're not really working out as planned. "They are playing with people's lives. Had it not been for Traffic policemen who have been intervening, all day long, this junction would have been a pool of human blood" (quote to Arusha Times from Mama Elisha).
Blog post here and Arusha Times exerpt here. I can't link directly as their archiving seems to be up the creek.