Traffic lights are an essential part of keeping chaos at bay on our city streets, but the idea didn't exactly get off to a flying start. The first gas-lit traffic light appeared outside the British Houses of Parliament in London in December 1868 but exploded two months later (which was bad news for the policeman operating it) and when the first electric lights appeared in the U.S. in 1912, apparently no-one wanted to stop for a “flashing bird house.” Gradually the technology improved and interconnected lights that could be automatically rather than manually controlled appeared in the 1920s. Now we could be seeing another great leap forward - traffic lights that talk to cars. That's the basis of Audi's travolution project which sets up a dialogue between vehicles and traffic lights in order to keep traffic flowing, save fuel, reduce emissions and possibly help keep drivers saner in the process.
Read the full article: Audi travolution: vehicle to traffic light communication system reduces fuel consumption