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SAN JOSE, Santa Clara County, Calif., Oct. 11, 2026 — A chain-reaction crash involving as many as five vehicles shut down all southbound lanes of US-101 near Tully Road early on Saturday morning, October 10, according to the California Highway Patrol.
The California Highway Patrol said the crash was first reported as a solo-vehicle collision shortly after 5:30 a.m. before additional vehicles became involved in a widening pileup just north of the Tully Road offramp. Within minutes, dispatch logs show the incident had grown to involve four or five vehicles, blocking multiple lanes of the freeway. The agency issued a SigAlert shortly before 6 a.m., closing all southbound lanes and directing traffic to exit at Tully Road while crews worked the scene.
Radio traffic described a white Tesla Model 3 and other vehicles, including a Ford F-150, a gray Honda Civic and a red Toyota sedan, with major front-end and all-around damage. One caller reported a driver trapped in the Ford after striking an already-crashed vehicle, though that person was reported uninjured. San Jose Fire Department units responded and at one point relayed a possible ejection, though that has not been confirmed. The CHP's call classification was later updated to reflect an ambulance response for injuries.
The California Highway Patrol has classified the incident as a fatal collision, though the number of people killed and the circumstances of the fatal injury have not been released. A coroner was requested to the scene. Investigators have not said which vehicle or driver, if any, is believed to have caused the initial collision, and a speed investigation was reportedly still pending hours after the crash. Three vehicles were towed as evidence, and the freeway reopened after an extended closure.
This report will be updated if the CHP releases further details on the number of people killed or injured.
We extend our sincere condolences to the family of the deceased.
Why Multi-Car Pileups Usually Start With One Small Collision
A five-car crash rarely begins as a five-car crash. It usually starts with one vehicle, a disabled car, a minor fender-bender, or a driver who brakes hard for something in the lane. On a freeway running at highway speed before sunrise, that first stopped or slowed vehicle becomes an obstacle that following drivers have only seconds to see and react to.
Low light plays a direct role in these pileups. In the hour before dawn, headlight glare, shadows, and the sudden appearance of brake lights or hazard flashers ahead can delay a driver's recognition of a hazard by a crucial second or two. Add fog, smoke, or glare off wet pavement, and a driver may not register that traffic has stopped until they are already in the braking zone, closing fast on the vehicles ahead. That is often how a two-car crash becomes a four- or five-car one within a single minute, as happened in the freeway log from this incident.
Following distance compounds the problem. Drivers spaced closely at high speed have little time to stop once the vehicle ahead brakes suddenly, and each successive impact can push a damaged vehicle back into the lane of travel, catching more cars in the chain reaction.
According to the Insurance Institute for Highway Safety, 17,008 motor-vehicle crash deaths occurred outside passenger vehicles in crashes involving passenger vehicles in 2023.
Frequently Asked Questions
Are secondary crashes common after an initial wreck?
Yes. Once a vehicle is stopped or disabled in a travel lane, approaching drivers often have very little warning, especially in low light, and secondary collisions can happen within seconds of the first impact.
What makes multi-vehicle crashes hard to investigate?
Investigators have to reconstruct the order of impacts across several vehicles, often relying on vehicle damage patterns, event data recorders, and any available camera footage, since drivers and witnesses may disagree on what happened first.
What typically causes a pileup involving several vehicles?
Common factors include one vehicle slowing or stopping unexpectedly, drivers following too closely for conditions, and reduced visibility from darkness, fog, or glare, which delays other drivers' reactions.
What to Do After a Multi-Vehicle Crash in San Jose, CA
If you're involved in a multi-car crash, try to stay inside your vehicle if it's not unsafe to do so, especially on a freeway shoulder, and turn on hazard lights to warn approaching traffic. Call 911 and give your location as precisely as you can, since these crashes often span multiple lanes and are reported differently by different callers.
Even if you feel fine, ask to be evaluated by paramedics at the scene. Adrenaline can mask pain from whiplash, internal injury, or a concussion for hours after a crash. Once you're safe, document the scene if possible, note which vehicles were involved and in what order you believe impacts occurred, and get a copy of the CHP incident report once it's available. If you're a San Jose resident affected by a freeway closure or secondary crash, local traffic apps and CHP's public incident page are the most reliable way to check real-time lane status.
