Transportation Secretary Anthony Foxx says technology that lets vehicles transmit information to each other has the potential to reduce accidents. Your car might see a deadly crash coming even if you don't, the government says, indicating it will require automakers to equip new vehicles with technology that lets cars warn each other if they're plunging toward peril.A radio signal would continually transmit a vehicle's position, heading, speed and other information. Cars and light trucks would receive the same information back from other cars, and a vehicle's computer would alert its driver to an impending collision. Alerts could be a flashing message, an audible warning, or a driver's seat that rumbles. Some systems might even automatically brake to avoid an accident if manufacturers choose to include that option.

Your car would "see" when another car or truck equipped with the same technology was about to run a red light, even if that vehicle was hidden around a corner. Your car would also know when a car several vehicles ahead in a line of traffic had made a sudden stop and alert you even before you saw brake lights The technology works up to about 300 yards.