V2V (vehicle-to-vehicle) communication, a technology designed to allow automobiles to “talk” to each other, is critical to the autonomous car concept. Vehicle-to-infrastructure (V2I) is an extension of V2V and allows vehicles to communicate with the roadside infrastructure. Collectively V2V plus V2I are known as V2X.
V2I communication would allow vehicles to share their positions, destinations and intended routes with central stations to, for instance, coordinate traffic lights according to traffic density, making driving not only safer but also more fuel efficient and environmentally-friendly. A vehicle could send out an alert as its wheels begin to skid on a wet surface, warning drivers in other vehicles. These simple messages would be transmitted via dedicated short-range communications (DSRC) on spectrum reserved for transportation safety.
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