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LONG BEACH, Los Angeles County, Calif., Oct. 6, 2026 — A chain-reaction crash involving several vehicles blocked lanes on northbound Interstate 405 near Atlantic Avenue in Long Beach on Sunday night, October 4, according to the California Highway Patrol. At least one person was reportedly hurt, officials said.
The California Highway Patrol said the collision began as a two-vehicle crash just north of Atlantic Avenue, blocking the left lane shortly after 7:20 p.m. Within minutes, additional vehicles became involved, and the incident grew into a four-vehicle crash blocking the middle lanes of the freeway.
A dispatch log shows a pickup truck came to a stop in the roadway as part of the pileup, with its driver reportedly directing traffic until authorities arrived. Most vehicles were moved to the right shoulder, while the pickup remained in the middle lanes. A tow truck was requested to clear the scene, and a report of fire aboard one vehicle prompted an emergency response.
Long Beach Fire Department units responded to the scene, and at least one vehicle was later towed from the roadway.
The circumstances that led to the initial collision remain under investigation. Our thoughts are with those who were injured, and we wish them a full recovery.
A Common Misconception About Freeway Pileups
Many drivers assume that chain-reaction crashes happen mainly because of reckless speeding by one driver who causes a domino effect behind them. The evidence suggests the picture is more complicated: most of these crashes involve ordinary following distances that simply aren't enough once one vehicle slows or stops unexpectedly in heavy traffic.
According to the National Highway Traffic Safety Administration, 28,595 large-truck occupants were injured in multi-vehicle crashes involving large trucks in 2023. That figure reflects how often secondary impacts, not just the first collision, are what cause injury once a pileup starts. A single stopped car can trigger a sequence of impacts before anyone behind has time to react.
The misconception that these crashes are rare or freak events also doesn't hold up. On busy urban freeways with multiple lanes merging near on-ramps, like the one involved in this incident, a single slowdown can ripple backward through traffic in seconds, catching following vehicles off guard regardless of how attentive their drivers are.
Frequently Asked Questions
How does fog or low visibility make these crashes more likely?
Reduced visibility shortens the time drivers have to see a slowdown ahead and react. Even without fog, nighttime glare and heavy traffic can have a similar effect, making a chain-reaction crash more likely once one vehicle brakes suddenly.
Why does following distance matter so much in heavy traffic?
A following distance that feels safe at a steady speed often isn't enough when a vehicle ahead stops abruptly. The gap needed to avoid rear-ending another car grows with speed, and many multi-vehicle crashes start when that gap is too small.
Are secondary crashes common after an initial wreck?
Yes. Once the first collision blocks a lane, following vehicles may have little warning, especially at night or in heavy traffic, and additional impacts can occur within seconds or minutes.
What makes multi-vehicle crashes difficult to investigate?
Investigators often have to determine the order in which vehicles collided, which can be hard to establish when several impacts happen within a short span. Conflicting driver accounts and physical evidence spread across multiple lanes add to the complexity.
What to Do After a Multi-Vehicle Crash in Long Beach, CA
If you're involved in a multi-vehicle crash, try to move to the shoulder if your vehicle is drivable and it's safe to do so. Turn on hazard lights and stay inside the vehicle if you're stopped in active lanes, since getting out in traffic can be dangerous.
Call 911 to report the crash and request medical evaluation even if injuries seem minor. Adrenaline can mask pain from impacts, and some injuries don't show symptoms right away.
Exchange information with other drivers if it's safe to do so, and take photos of vehicle positions and damage if possible. Reporting the crash to your insurance company promptly and keeping a copy of the official report can help later if you need medical follow-up or wish to file a claim.
