Feds preview rules of the road for self-driving cars

Obama administration officials are previewing long-awaited guidance that attempts to bring self-driving cars to the nation's roadways safely -- without creating so many roadblocks that the technology can't make it to market quickly. Traditional automakers and tech companies have been testing self-driving prototypes on public roads for several years, with a human in the driver's seat just in case. The results suggest that what once seemed like a technology perpetually over the horizon appears to be fast approaching, especially with car companies announcing a string of investments and acquisitions in recent months. Federal officials have been struggling with how to capitalize on the technology's promised safety benefits -- the cars can react faster than people, but don't drink or get distracted -- while making sure they are ready for widespread use. The new guidance represents their current thinking, which they hope will bring some order to what has been a chaotic rollout so far.