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Cerritos, CA (September 14, 2026) – A woman died after a vehicle rolled over multiple times on the southbound I-605 at the SR-91 connector on Saturday night, September 12, according to authorities. Officials say a second vehicle involved in the crash fled the scene.
The California Highway Patrol was first notified of a vehicle that had overturned repeatedly in the lanes shortly before 10:40 p.m., authorities said. One vehicle came to rest in the roadway while another reportedly went down an embankment nearby, according to radio traffic from the scene.
A witness told responding officers that a dark-colored Mercedes-Benz SUV, possibly a Maybach model, struck the other vehicle, causing it to crash, and then left the area without stopping, authorities said. The plate number was not known, and investigators are treating the departure as a felony hit-and-run under California law. The disabled vehicle involved reportedly came to rest along the right shoulder further down the roadway, according to the witness account relayed to authorities.
Los Angeles County Fire Department personnel responded to the scene, and the coroner's office was called out for a woman identified in dispatch records as Ms. Hernandez, according to authorities. Her age and further identifying details have not been released.
The crash shut down multiple lanes for several hours overnight while Caltrans crews and tow operators worked the scene, authorities said. Traffic was routed off the freeway at nearby exits during the closure, and lanes reopened gradually after roughly 3 a.m. Sunday, according to CHP logs. The investigation into the crash and the search for the fleeing vehicle remain open, authorities said.
Our condolences go out to the family and friends of the deceased.
A Common Misconception About Rollover Crashes
Many drivers assume rollovers happen mainly because a vehicle is struck from the side and knocked over by another car. In practice, many rollovers start with a driver overcorrecting, losing control, or being forced off the roadway, causing the vehicle to trip on a curb, guardrail, or its own tires and flip on its own, without ever being hit broadside.
Another assumption is that rollovers are survivable as long as the vehicle stays largely intact. According to the National Highway Traffic Safety Administration, 38 percent of pickup-occupant fatalities occurred in vehicles that rolled over in 2023. That figure reflects how often people inside a rolling vehicle are hurt or killed, even when the vehicle does not break apart, largely because unrestrained occupants are thrown around the cabin as it turns over.
It's also a mistake to assume rollovers only happen at high speeds on rural highways. They can occur on urban freeways and connector ramps too, whenever a vehicle loses traction or control, regardless of how familiar or well-traveled the road is.
Frequently Asked Questions
How does speed affect whether people survive a crash like this?
Higher speed means more energy is absorbed in a crash, which increases the risk of severe injury. Even modest reductions in speed can lower both the likelihood and severity of injuries in a rollover or multi-vehicle crash.
Why does wearing a seat belt matter so much in a rollover?
A seat belt keeps an occupant positioned inside the vehicle as it rolls, reducing the chance of being thrown against the roof, ejected, or thrown from the vehicle entirely. Ejection significantly raises the risk of fatal injury in rollover crashes.
What should families do after a fatal crash like this one?
Families can contact the investigating agency, in this case, the California Highway Patrol, for updates on the case and to request a copy of the crash report once it's completed. It's also worth asking about victim assistance resources the agency may offer.
How do authorities investigate a fatal crash involving a vehicle that fled the scene?
Investigators typically rely on witness statements, physical evidence at the scene, surveillance or traffic camera footage, and vehicle debris to identify a fleeing vehicle. Evidence from tow truck inspections and forensic analysis of the vehicles involved often plays a role as well.
What to Do After a Rollover or Hit-and-Run Crash in Cerritos, CA
If you're involved in or witness a crash like this, move to a safe area away from traffic if possible and call 911 right away. Try to note details about any vehicle that leaves the scene, including color, make, and direction of travel, since that information can be critical to investigators.
Anyone involved in a crash should get a medical evaluation even if injuries seem minor at first, since some injuries from a rollover, such as head trauma or internal injuries, aren't always obvious right away. Keep records of any medical visits and follow up with the CHP or local police to check on the case status. If you witnessed the crash, consider providing a statement, since witness accounts are often key to identifying vehicles that fail to stop.
