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BUENA PARK, Orange County, Calif., Sept. 20, 2026 — A multi-vehicle crash reportedly injured at least one driver on Saturday evening, September 19, on eastbound State Route 91 near the interchange with Interstate 5 in Buena Park. Several vehicles were involved after a driver allegedly cut off another car before losing control.
According to a witness account, a black four-door sedan, driven by a young man with two to three passengers, was driving recklessly and nearly collided with another vehicle moments before the crash. The witness told authorities the sedan then spun out and struck multiple vehicles in the eastbound lanes. The witness reportedly captured a photo of the sedan's license plate.
Radio traffic described a chain reaction involving at least three vehicles, including a silver Honda Accord and a white Toyota RAV4, with an additional vehicle also involved. Authorities said two vehicles came to rest in the center divider, and one ended up on the right shoulder. The driver of the Honda Accord reportedly declined medical treatment; the condition of occupants in the other vehicles has not been released.
The crash blocked lanes on eastbound SR-91 near the transition to I-5, and the carpool lane was temporarily closed while crews worked to clear the roadway. A tow truck was requested to remove the vehicles. All lanes have since reopened, according to authorities.
The California Highway Patrol is investigating the crash. No arrests had been announced as of Saturday night. Authorities have not released the number of people injured or their conditions.
We hope everyone who was hurt makes a full and speedy recovery.
When Multi-Vehicle Pileups Are Most Likely to Happen
Multi-vehicle crashes on freeways tend to cluster around the evening commute, when traffic is heaviest, and speed differences between lanes are largest. A single driver losing control in a dense pack of cars, especially near a busy interchange like SR-91 and I-5, can trigger a chain reaction because following vehicles have little space to brake or steer around debris and stalled cars.
Weekend evenings add another layer of risk. Traffic volume stays high into the night, but light begins to fade, and driver attention can lapse after a full day on the road. Fatigue, aggressive lane changes, and higher speeds tend to show up more often in the hours after sunset than during the midday lull.
According to the National Highway Traffic Safety Administration, 365 large-truck occupants were killed in multi-vehicle crashes involving large trucks in 2023. That figure reflects how quickly a single vehicle's loss of control can pull others into a crash once traffic is moving close together at speed.
Frequently Asked Questions
What should I do if I'm stopped near a crash on the freeway?
Turn on hazard lights, stay inside the vehicle if it's safe to do so, and move as far from active lanes as possible. If you can safely reach the shoulder or an exit, do so rather than remaining stopped in a live lane.
How does low visibility contribute to chain-reaction crashes?
Reduced visibility from darkness, fog, or glare shortens the distance drivers have to react to a slowing or stopped vehicle ahead, which is why initial crashes often pull in additional cars before drivers can respond.
Why does following distance matter so much on the freeway?
More space between vehicles gives drivers time to brake or steer around a hazard. In dense traffic, a following distance of only a second or two can be the difference between stopping safely and rear-ending the car ahead.
Are secondary crashes common after an initial wreck?
Yes. Vehicles slowing or stopping to avoid the first crash create a hazard of their own, and drivers approaching from behind who don't reduce speed in time often cause a second collision in the same area.
What to Do After a Multi-Vehicle Crash in Buena Park, CA
If you're involved in or witness a multi-vehicle crash, move to a safe location away from traffic before doing anything else. Call 911 to report the crash and any injuries, and wait for California Highway Patrol officers to arrive and document the scene.
Even if you feel fine, it's worth getting checked by a medical provider afterward. Adrenaline can mask pain from a collision, and some injuries don't show symptoms right away. Keep any photos, witness contact information, or documentation you gather at the scene, since multi-vehicle crashes often involve conflicting accounts of how the chain of events unfolded.
