The National Transportation Safety Board (NTSB) and the California Highway Patrol have opened a safety investigation into the Aug. 19 crash and fire of a Tesla semitruck that closed Interstate 80 for several hours in Placer County, about 19 miles northeast of Nevada City, California, on Aug. 19.
Investigators from the Office of Highway Safety will travel to the crash site to examine the wreckage and gather details about the events leading up to the collision and the subsequent fire response, the agency said.