Audi models now network with other brands

* Second CAR2CAR Forum presents initial results of communication between vehicles of different brands
* Innovations will enhance traffic safety
* Greater efficiency due to more information

Audi has presented a milestone of the automotive future at a testing ground in Dudenhofen, Germany. Along with other European vehicle manufacturers at the second CAR2CAR Forum, Audi demonstrated how it will be possible in the future for data to be exchanged between vehicles of different brands.

Communication between vehicles as well as between vehicles and infrastructure will pave the way for further improvements in traffic flow and safety. The system assists and alerts a driver to any number of dangerous situations on any road. It can notify the driver of an icy patch ahead on a rural route, of a broken-down vehicle in front or of an unexpected traffic jam on a highway. In addition, a networked and consequently “intelligent” vehicle boosts driving comfort.

If this technology is to realize its full potential, all vehicles and other road users must utilize a uniform standard to communicate with one another.

The demonstration on the testing ground allowed nine vehicle manufacturers and five development partners to prove – even in the preliminary phase of development – that communication between vehicles of different brands is already fast, precise and reliable.

Innovative communication units were installed in an Audi Q7 and an Audi A6 allroad quattro to facilitate the transmission of radio signals in accordance with the CAR2CAR standard. The system’s advantages were evident as it warned of an approaching emergency vehicle and prevented an accident with a motorcycle at an intersection. Similarly, a construction site hidden around a corner quickly triggered an alert in the driver’s direct field of view.

The central driver information system and the Audi MMI – the Multi Media Interface – are perfectly designed to present data to the driver in a clear and logical manner. Easily understandable audible instructions round out the warning system.

In keeping with its brand claim “Vorsprung durch Technik”, Audi will continue to implement this technology not only in the “CAR2CAR Communication Consortium”, but also in other national and international projects. A core pursuit at Audi lies in traffic-efficiency applications such as the Travolution project, which allows urban traffic to flow far more freely thanks to communication between traffic signals and vehicles.

During the pilot experiment in Ingolstadt, the timing of 46 traffic lights was optimized. Three of them were also equipped with WLAN-based communications technology. Calculations provided by the Technical University of Munich, a venture partner, hint at the potential for remarkable efficiency. A 20-percent reduction in stops at traffic lights and correspondingly improved fuel efficiency – assuming an hourly volume of 1,000 vehicles in Ingolstadt – will save over 700,000 liters (around 185,000 U.S. gallons) of fuel annually.

Car-to-car communication has nothing to do with gesturing after a close call on the highway. Futurists foresee a time when cars will use systems of GPS and WiFi tech to let them communicate with each other, relaying information about road conditions and traffic anomalies to prevent smash-ups. DaimlerChrysler is testing such a system — dubbed Willwarn (Wireless Local Danger Warning), with which vehicles are able to "warn" of critical situations picked up by on-board sensors, such as fog, black ice or obstacles such as broken-down car. Such distant early warnings, theoretically, would allow a driver time to take evasive action. As DaimlerChrysler notes in a press release, the system could be enhanced by adding radio beacons at the roadside to give traffic control centers ground reports, as well as transmit information on traffic, construction and other route-related issues. No word on when such a system will be in place, but he who comes out first often sets the standard, a benefit DCX and its suppliers are likely gunning for. – Mike Spinelli

Press Release:

DaimlerChrysler first in the world to effectuate the new technology

In future, motorists will be able to detect danger even if the danger spot lies around the next bend or over the horizon. This has now been successfully verified by DaimlerChrysler experts and their partners in a field test conducted at the conclusion of the "WILLWARN" (Wireless Local Danger Warning) European research project. During the course of this test, five vehicles equipped with WLAN-based radio technology used the "Car-2-X Communication" system to radio details of critical situations detected by their on-board sensors - fog, black ice or obstacles on the road such as broken-down vehicles - to following cars. These early warnings enabled the drivers of the cars behind to prepare for the danger and adapt their speed in plenty of time.

DaimlerChrysler had already tested this technology some six years ago - a world first at the time - by sending the first ever inter-communicating vehicle fleet out onto the road as part of the "FleetNet" research project. This field test demonstrated that WLAN (Wireless Local Area Network) technology, which had already proven a success when used for wireless Internet access, also allowed vehicles to communicate with each other. One of the key benefits is that expensive, fixed-installation transmitting and receiving devices are not required, since the cars themselves act as both transmitters and receivers. The cars establish an ad-hoc radio network and send any necessary warnings to all other vehicles within a radius of around 500 metres. For vehicles outside of this radio range, the cars act as relays and pass on any warnings in much the same way as a relay runner would hand over a baton. No additional sensors are required to detect critical situations, since the necessary information is provided by the anti-lock braking system (ABS), the Electronic Stability Program (ESP ), the steering-angle sensors, the outside thermometer or the navigation system.

The DaimlerChrysler engineers incorporated the key groundwork laid during the course of the "FleetNet" project into the subsequent "NOW" (Network On Wheels) programme (a German cooperation project) and the current "WILLWARN" project. Their aim was to use the experience gained to work together with partners from the automotive components and electronics industries in order to further develop and standardise this promising technology whilst also securing the rights to use the required frequencies. The DaimlerChrysler specialists also supplied information to partners who only joined the project at a later stage, quickly realising that the only way to establish a fully-functioning WLAN radio network that would benefit all road users was to cooperate with other car manufacturers and the relevant authorities. After all, for an ad hoc radio network to be of any use, enough vehicles have to be equipped with the necessary technology.

Radio beacons at the side of the road are required in order to ensure that the first vehicles to be equipped with such a system benefit immediately. These stationary radio nodes could also be used to provide traffic control centres with additional and better information. However, direct contact with the Internet and its numerous fields of application is also possible. In addition to warning motorists of critical situations in advance, the new radio network could therefore also be used to improve the flow of traffic: communicating cars could guide their occupants away from traffic congestion or even prevent tailbacks from occurring at all.

DaimlerChrysler was also one of the instigators behind the European "Car2Car Communication Consortium" and is involved in the American Vehicle-Infrastructure Integration Initiative. These projects lay the political foundations for vehicle communication in Europe and America and have the aim of accelerating the process of standardisation.

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