Audi is moving ahead with networked traffic lights in Düsseldorf. After Ingolstadt, the city on the Rhine is the second in Europe in which Audi is introducing its Traffic Light Information service. At the end of January, Audi drivers will see information from around 150 traffic lights in their cockpit, thus increasing their chance of catching a “green wave”.
By early summer most of the intersections in Düsseldorf, approximately 450 out of a total of some 600 installations, will be networked. Vehicle-to-infrastructure (V2I) services like Audi Traffic Light Information increase efficiency, convenience and safety on the roads.
Audi Traffic Light Information consists of two functions: Green Light Optimized Speed Advisory (GLOSA) and Time-to-Green. GLOSA calculates the ideal speed for getting a “green wave”. For example, if the function indicates the applicable speed limit, the next traffic light will be reached at green. Drivers do not have to accelerate unnecessarily, they are not stressed, and they drive more safely. GLOSA can also suggest reducing speed gradually about 250 meters ahead of the traffic lights so that the driver and the cars behind reach the intersection when the lights turn to green. This reduces uneconomical stop-and-go traffic.