Second Federal Agency to Probe Fatal Florida Tesla Crash

The NTSB, in a 2017 report, wrote that design limitations of Autopilot system played a major role in the fatality, the first known one in which a vehicle operated on a highway under semi-autonomous control systems. The agency said that Tesla told Model S owners that Autopilot should be used only on limited-access highways, primarily interstates. The report said that despite upgrades to the system, Tesla did not incorporate protections against use of the system on other types of roads.