Driverless taxis in San Francisco cause traffic jams, chaos

A fully driverless taxi service called Cruise agreed to cut its fleet in half while officials investigate several crashes and strange behavior from the cars. The move comes a few weeks after regulators gave two companies the green light to run the robo taxis. NBC News’ Dave Ingram reports. » Subscribe to NBC News: » Watch more NBC video: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features , , , Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. Connect with NBC News Online! NBC News App: Breaking News Alerts: Visit : Find NBC News on Facebook: Follow NBC News on Twitter: Get more of NBC News delivered to your inbox: #NBCNews #SanFrancisco #DriverlessCar