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ANAHEIM, Orange County, Calif., Oct. 11, 2026 — A multi-vehicle crash blocked lanes on westbound Highway 91 near the Interstate 5 interchange on Saturday evening, October 10, according to the California Highway Patrol.
The California Highway Patrol said the collision was reported shortly before 7 p.m. in the second lane from the left, involving at least four vehicles. A caller told dispatchers a white Kia sedan was involved along with a blue or gray Toyota SUV, a white Dodge, and at least one other vehicle, though the exact number of cars and the sequence of impacts were not immediately clear. One caller said he was not sure whether three or four vehicles were involved.
The call was initially classified as a collision with unknown injuries, then upgraded to confirm injuries at the scene. It was not immediately known how many people were hurt or how serious their injuries were. One caller reported uncertainty about whether one of the vehicles was still drivable, raising concern about a disabled car left in a live travel lane.
Emergency crews requested a tow unit for the scene, and medical personnel were called to assist. By about 7:35 p.m., authorities said all involved parties had been relocated to the right shoulder near the Magnolia Avenue off-ramp, and all lanes of the highway had reopened. The California Highway Patrol has not released further details on the cause of the crash, which remains under investigation.
We wish the injured a complete and speedy recovery.
Why Multi-Vehicle Pileups Turn Into Chain-Reaction Crashes
A single crash on a busy freeway rarely stays single. Once one vehicle slows or stops in a travel lane, drivers behind it have only seconds to react. On a highway moving at 60 or 65 mph, that reaction window can close before a driver even sees brake lights, especially near interchanges where traffic is already merging, slowing, or changing lanes.
Interchange zones, such as where Highway 91 meets Interstate 5, add extra risk. Drivers there are juggling merges, exit decisions, and speed changes at the same time. If one car brakes hard or clips another, following vehicles often have nowhere to go: lanes are full, shoulders may be narrow, and a driver swerving to avoid one car can strike another. That is how a two-car incident becomes a three- or four-vehicle pileup within moments.
According to the National Highway Traffic Safety Administration, 28,595 large-truck occupants were injured in multi-vehicle crashes involving large trucks in 2023. The same pattern of cascading impacts applies broadly to passenger vehicles caught in chain-reaction wrecks: each additional vehicle that strikes the scene adds new angles of impact and new uncertainty for responders trying to determine who hit whom and in what order.
Frequently Asked Questions
Are secondary crashes common after an initial wreck?
Yes. Traffic backing up behind a first collision creates a sudden slowdown that following drivers may not anticipate, which is a leading cause of follow-up impacts at the same scene.
What makes multi-vehicle crashes hard to investigate?
With several vehicles involved, investigators have to reconstruct the order of impacts, identify which driver struck which vehicle, and sort out conflicting witness accounts, all of which takes more time than a two-car crash.
What causes multi-vehicle pile-ups?
Common factors include sudden braking, lane changes near merge points, limited visibility, and vehicles that cannot stop in time when traffic ahead slows unexpectedly.
What to Do After a Multi-Vehicle Crash in Anaheim, CA
If you're involved in a multi-vehicle crash, try to move to the shoulder or a safe area if your car is drivable, and turn on hazard lights to warn oncoming traffic. Check yourself and passengers for injuries before stepping out, since adrenaline can mask pain from an impact.
Call 911 even if injuries seem minor. Some injuries, including whiplash or internal bruising, don't show symptoms right away, so a medical evaluation afterward is worth the time. Exchange information with other drivers if it's safe to do so, and take photos of vehicle positions and damage if you're able.
Finally, file a report with the California Highway Patrol or local police, and keep a copy for your records. In a crash involving several vehicles, an official report can help clarify what happened once all the facts are gathered.
