http://phys.org/news/2014-08-govt-require-cars.html
The Obama administration said Monday it is taking a first step toward requiring that future cars and light trucks be equipped with technology that enables them to warn each other of potential danger in time to avoid collisions.
A research report released by the National Highway Traffic Safety Administration estimates that the technology could eventually prevent as many as 592,000 left-turn and intersection crashes a year, saving 1,083 lives. The agency said it will begin drafting rules to require the technology in new vehicles.