• 2017/9/13

says fatal Tesla Autopilot crash caused in part by resulting inattention


The National Transportation Safety Board (NTSB) held a meeting today to discuss the results of its

investigation into a 2016 crash in which a Tesla Model S with Autopilot engaged collided with a

transport truck, resulting in the death of the Tesla’s driver Joshua Brown.
The NTSB report follows a finding earlier this year from NHTSA that found no evidence that Tesla’s

Autopilot software didn’t work as intended. The NTSB similarly found that the system operated as

intended – but also cited the driver’s inattentiveness, a result of his excess reliance on the

Autopilot tech, was a cause in the death.
Per Recode, the agency’s probable accident cause reads in part:
Contributing to the car driver’s over-reliance on the vehicle automation was its operational

design, which permitted his prolonged disengagement from the driving task and his use of the

automation in ways inconsistent with guidance and warnings from the manufacturer.
NTSB’s members voted unanimously to attribute the probable cause of the accident to multiple

factors, however, including also the failure of the truck driver to yield to the vehicle. But it

said that while Tesla’s system was operating as technically designed, it was also not being used in

the situations it was intended for, which means the driver wasn’t as engaged as they should be. In

fact, the driver ignored at least seven warnings from the system to re-engage before the accident

Tesla has altered the way its system operates since the accident, adding a feature that disengages

the Autopilot system entirely if a driver is continually inattentive, and slowing the vehicle to a

stop if warnings are repeatedly ignored. Autopilot also can’t be re-engaged at this point unless

the vehicle comes to a complete stop and is re-started again. Autopilot improvements also included

changes to how it operates on a sensor and automation level to prevent this kind of mishap in the

The board’s recommendations essentially suggest that systems like Autopilot simply cease to work

when used outside of their intended operation conditions (which the new repeated warning shut-down

addresses, at least in part). This recommendation is made to all manufacturers who offer automated

vehicle controls, including Audi, Volvo, Infinity, Mercedes, BMW and Tesla.
We’ve reached out to Tesla regarding the NTSB’s findings and will update this post if we receive a





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