A woman in her 30s was killed early Sunday, September 20, 2026, after her car struck a boulder in the center median of southbound Interstate 280 in unincorporated Hillsborough, San Mateo County. California Highway Patrol officers responded to the area around 2 a.m. but initially found no sign of a collision in the darkness. The wrecked black Volkswagen Tiguan was not discovered in the median ditch until roughly 7:30 a.m., hours after the crash occurred. The woman, the vehicle’s sole occupant, died at the scene, and her identity has not been publicly released.
According to KTLA, CHP Officer Sophie Lu said investigators still do not know how the vehicle ended up in the freeway median or whether drowsiness or impairment played a role in the crash. Hoodline reported that the extended gap between the initial 2 a.m. response and the vehicle’s discovery at 7:30 a.m. remains unexplained in the available report. No road or lane closures were reported in connection with the crash. CHP said the investigation into the cause of the collision remains active.
