The National Transportation Safety Board (NTSB) will meet on Sept. 12, 2017 to determine the probable cause of the fatal, May 7, 2016, crash of a Tesla car near Williston, Florida.

One person was killed when a 2015 Tesla Model S collided with a 2014 Freightliner Cascadia semitractor-trailer on US Highway 27A. The Tesla’s Traffic-Aware Cruise Control and Autosteer lane-keeping assistance features were being used by the driver at the time of the crash. The Tesla was traveling at 74 mph just prior to impact.

A team of five NTSB investigators traveled to Williston to conduct the on-scene phase of the investigation, using three-dimensional laser scanning to document the crash location, the damaged trailer and the damaged car. As the investigation progressed, the team expanded to cover nine areas of inquiry.

The board meeting is scheduled to be held here in the NTSB’s Board Room and Conference Center, 429 L’Enfant Plaza SW, Sept. 12, beginning 9:30 a.m. The meeting is open to the public. For those who cannot attend in person, the meeting will be webcast and a link to the webcast will be available shortly before the start of the meeting at

The NTSB’s preliminary report for this crash was issued July 26, 2016, and the docket was opened June 19, 2017.