The California Highway Patrol says they have not been able to determine the cause of the collision that killed 19-year-old Aryel Amin on March 16.
According to CHP Officer Steve Creel, no mechanical failures were discovered during the extensive investigation.
Creel says the official cause of the collision was deemed to be an "unsafe turning movement" and that it is likely it will remain unknown why Amin made the maneuver.
"We looked at the blood toxicology, interviewed witnesses and made a full vehicle inspection," commented Creel. "Witnesses put Amin entering the freeway on ramp then making a sudden sharp left turning movement, which led to the collision."
"Our investigators were not able to determine any equipment failures or mechanical defects that would have caused the collision," commented Creel. "The investigation eliminated any external factors such as impairment or equipment failures, which led us to believe it was the driver's action that caused the collision."
The young woman, who was a 2011 School graduate, was killed in aon Interstate 580 on March 16 after her 1995 white Toyota somehow turned and became perpendicular to oncoming traffic.
It was struck just behind the driver's door by a 2001 Ford SUV driven by a 20-year-old Tracy woman. That driver was not seriously injured.
Creel said both Amin and one of her two dogs were ejected from the vehicle, resulting in their deaths. He added it appears she was not wearing a seat belt and the ejected dog was also not restrained.
"This is not at all the first time we [the California Highway Patrol] have seen an unrestrained family pet die in a collision," said Creel.
Amin worked at In-N-Out in Pleasanton. Co-workers described her as .
She was the yearbook editor her senior year at Dublin High and played on the girls' volleyball team.
A vigil was held for Amin at Emerald Glen Park on March 20. After the collision, Fallon Middle School by writing down their sentiments and wrote words of condolences and support for Ali Amin, Amin’s younger brother, who was an 8th grade student at Fallon.