car-to-car communication systems - Radio system sends danger warnings from vehicle to vehicle: Mercedes-Benz expects road safety to also be enhanced even further in the future by car-to-car communication systems, which are now undergoing a major testing campaign in Germany. Car-to-car communication systems utilize WLAN (Wireless Local Area Network) radio technology, which enables them to rapidly transmit warnings in time to prevent accidents. Among other things, such systems can be used to warn drivers of fog, black ice, and other dangers right around the next bend. The vehicles serve as transmitters or receivers of information, which they can also forward to other vehicles like a relay runner passing a baton. The critical situations themselves are registered by existing onboard safety systems such as ABS and ESP®. In the future, it may also be possible to have vehicles communicate with roadside beacons in order to optimize traffic flows and prevent the formation of traffic jams.