AS CARS EVOLVE INTO TRAINS:

Car-to-Car Communication System to Get a Massive Road Test (Julie Halpert, 9/07/11, Technology Review)

Technology that would allow cars to talk to each other--to help prevent accidents and improve traffic flow--is about to get a real-world road test following new funding from the U.S. Department of Transportation.

Many high-end cars already come with sensors capable of spotting a vehicle in a driver's blind spot, or warning that the car is drifting out of lane. However, these technologies, which use radar, laser, or video sensors, have a limited view. Car-to-car communications could provide even more sophisticated earlier warnings--for example, when a car several vehicles ahead brakes suddenly.

Last month, the DOT awarded $14.9 million to the University of Michigan's Transportation Research Institute to test the technology, known as vehicle-to-vehicle and vehicle-to-infrastructure communication. The system to be tested relies on dedicated short-range radio communication to allow cars to signal one another and receive messages from traffic equipment.

The DOT estimates that 80 percent of serious crashes could be addressed by this technology.

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