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NTSB: 'operational limitations' played major rule in Tesla autopilot crash

WASHINGTON, Sept 12 (Reuters) - The chairman of the U.S. National Transportation Safety Board (NTSB) said Tuesday "operational limitations" in the Tesla Model S played a "major role" in the May 2016 crash that killed a driver using the vehicle's semi-autonomous "Autopilot" system.

Reuters reported Monday that the NTSB is expected to find that the system was a contributing factor. The system is expected be labeled a contributing factor in the crash because it allowed drivers to avoid steering or watching the road for lengthy periods. (Reporting by David Shepardson; Editing by Chizu Nomiyama)