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Cars will be able to ‘talk’ to one another for improved safety

Eavesdropper
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Networking vehicles with one another and with the infrastructure gives the driver information on the situation beyond his or her field of vision and warns the driver about accidents or traffic jams. Researchers from Fraunhofer will be unveiling the latest applications for traffic safety and efficiency at this year’s embedded world Exhibition & Conference in Nuremberg, Germany. The Fraunhofer Institute for Communication Systems ESK in Munich, Germany, are working on innovative ideas for car-to-x communication (abbreviated as C2X): by networking vehicles with one another and the infrastructure, the software systems can keep the driver constantly apprised of current traffic and road conditions to support the driver in the decision-making process which should theoretically reduce the number of traffic accidents. Josef Jiru, the project manager, had the following to say: “This system is premised upon on a WLAN specifically developed for vehicles in combination with GPS. The vehicle’s position and sensor data on speed, acceleration or sliding can be reported to wireless communication nodes on the side of the road – called roadside units (or RSUs).” In exchange, the RSUs give vehicles the latest information on road conditions ahead, for instance if there are any accidents or traffic jams, or just the best speed for timing the green lights.
 

There a three types of messages for this: First of all, there are periodic standardized messages that every car transmits to other cars and the RSUs up to ten times a second. They include the position, direction of motion and speed among other things. Secondly, there is event-based information such as notifications of accidents involving passenger cars or that the RSU recognizes because several vehicles are simultaneously braking fast. This also captures traffic jams because a lot of cars are standing still or slick roads when the ESP (electronic stability program) activates in other vehicles. Thirdly, there is application information. This is information on traffic-light sequences that vehicles can exchange with one another, along with traffic information generally. RSUs can also gather data from other sources such as radio and the traffic center. Other applications and the software for them are loaded wherever needed to launch the minimum configuration for the C2X system in order to go easy on the resources of the units. For more information please visit their site, follow the link.

 

update: The picture may have been altered in Photoshop.

 

Eavesdropper