a graphic of a 'connected' car - An under-the-hood box (a processor with memory) collects and transmits data between the vehicle's onboard equipment (OBE) and between OBE on near-by connected vehicles and safety devices along the roadside.   A display panel, sitting in the vehicle's center console opposite the driver's dashboard, displays audio or visual safety warnings to the driver.   A radio and antenna, using dedicated short-range communications (DSRC) and a GPS receiver, receive and transmit data about the vehicle's position to other vehicles and to safety devices along the roadway.  Sensors collect additional information that improves the accuracy of the data being collected and transmitted by the vehicle.
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The U.S. Department of Transportation is committed to ensuring that connected vehicle technology preserves personal privacy and the system protects against unauthorized access.

Connected vehicle technology does not involve exchanging or recording personal information or tracking vehicle movements. The safety applications require that the wireless devices in connected vehicles send and receive basic safety data—vehicle location, speed, direction, brake status, etc. The information sent between vehicles does not identify the vehicles or their drivers. Nearby motor vehicles will only use that information to warn drivers of crash-imminent situations.