When the vehicle receives a hazard warning, the technology compares the vehicle's position with the location of the hazard, says Dr. Christian Weiss, explaining the way the warning works. As soon as the vehicle approaches the danger spot, the driver is audibly and visually warned. This enables the driver to prepare for the situation, adjust his or her driving behaviour and avoid accidents. Networking makes traffic not only safer, but more efficient as well, the Mercedes-Benz development engineer explains. Because when accidents are avoided, no traffic back-up occurs and traffic flows more freely and efficiently. Car-to-X communication can contribute to efficient mobility also by networking with the traffic infrastructure, for example traffic lights.