A trip north on Highway 101 turned tragic Sunday when a blown tire caused a 21-year-old man to roll the Ford SUV he was driving, throwing his mother from the truck and killing her.
Kathy Norman, 53, of South San Francisco, died at the scene of the accident at 5:45 p.m. when the right rear tire of the white Ford Explorer went flat, causing the SUV to roll over, said Eric Parsons, a California Highway Patrol spokesman.
Norman, who wasn’t wearing a seatbelt in the backseat, was thrown from the car, Parsons said.
She died at the crash site, just south of Holly Street in San Carlos, San Mateo Coroner Robert Foucreault said. He added that the 21-year-old South City driver was her son, but he did not know her relationship with the other two passengers, a 16-year-old Oakland girl and a 24-year-old San Bruno woman.
Foucreault said Norman died of multiple traumatic injuries. The three others were transported to Stanford Hospital for minor injuries, Parsons said.
"It looks like one of the tires went flat for an unknown reason, and the vehicle went to the right. The driver lost control and the vehicle overturned," Parsons said.
It’s believed that Norman’s son was driving the speed limit, 65 mph, at the time of the crash, and drugs and alcohol weren’t thought to be involved, Parsons said.
The CHP is looking for any witnesses to help them determine, among other things, whether the tire blew or just went flat, Parsons said. Witnesses should contact CHP Officer Adam Rakela at (650) 369-6261.