WASHINGTON - 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.
The action, still some years off, has "game-changing potential" to cut collisions, deaths and injuries, federal transportation officials said at a news conference today.
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.
If communities choose to invest in the technology, roadways and traffic lights could start talking to cars, too, sending warnings of traffic congestion or road hazards ahead in time for drivers to take a detour.
The technology is separate from automated safety features using sensors and radar that are already being built into some high-end vehicles today and which are seen as the basis for future self-driving cars. But government and industry officials see the two technologies as compatible. If continuous conversations between cars make driving safer, then self-driving cars will become safer as well.
The National Highway Traffic Safety Administration, which has been working with automakers on the technology for the past decade, estimates vehicle-to-vehicle communications could prevent up to 80 percent of accidents that don't involve drunken drivers or mechanical failure.
Crashes involving a driver with a blood alcohol content of .08 or higher accounted for nearly a third of the 33,500 traffic fatalities in the U.S. in 2012, according to the safety agency.