Sitting wasting fuel at red traffic lights could soon be a thing of the past thanks to a project currently being tested in Audi's home town of Ingolstadt. Audi engineers are helping develop the system designed to reduce CO2 emissions and cut urban traffic congestion.
Specially modified traffic light gantries have communication modules enabling them to communicate with each other and specially equipped cars. Software links 46 of these stations together, optimising the phasing to encourage smoother traffic flow. As the driver approaches the junction the car receives information indicating when the signal change will occur. To enable the driver to pass through without stopping, the required approach speed is calculated and displayed to the driver through Audi's MMI interface. Currently only three of the 46 lights are able to communicate with modified A6 Avant and A5 models, though an additional 20 cars and 50 lights are planned as the pilot project develops.
The automated traffic light system has remained largely unchanged since first installed in Chicago in 1910. Any development of the system is likely to be welcomed by drivers if not only for environmental reasons but also to reduce frustration.
Thomas Newby - 22 Sep 2008
