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STUDIO CITY, Los Angeles County, Calif., Oct. 13, 2026 — A chain-reaction crash involving several vehicles shut down lanes on northbound US-101 near Vineland Avenue early Monday morning, October 12, according to the California Highway Patrol. The agency's traffic log described major damage to at least two vehicles and reported injuries.
According to the CHP incident log, the crash was first reported around 5:42 a.m. as a two-vehicle collision blocking the number one lane and a slow lane. Within minutes, additional callers described a BMW involved with as many as five other vehicles, and the backup grew to block multiple lanes of the freeway.
A later update from a CHP unit on scene described a red vehicle with major rear-end damage blocking the number one lane and a white vehicle with major front-end damage in the number four lane, with two more vehicles also involved. Lanes three and four were reported blocked by fire personnel responding to the scene. The report noted injuries, though the number and severity have not been released.
Two tow trucks were requested to clear the vehicles, and units asked for additional resources to move a damaged car to the roadside and keep traffic moving in the open lane.
The investigation appears to be ongoing. We hope everyone who was hurt makes a full recovery.
What Actually Reduces Chain-Reaction Freeway Pileups
Multi-vehicle pileups on freeways often start with one vehicle slowing or stopping sooner than drivers behind it expect. In heavy early-morning or rush-hour traffic, that first brake light can trigger a rapid series of rear-end impacts because following vehicles simply don't have the distance or time to stop once the car ahead of them does. Each additional vehicle in the chain has less warning than the one before it.
Engineers have found real success addressing this problem through tools that smooth traffic flow instead of relying only on driver reaction. Variable speed-limit signs that slow traffic gradually ahead of congestion, better freeway lighting, and real-time message signs warning of slowdowns ahead all give drivers more time to adjust before they're forced into a sudden stop. Wider shoulders and clear sight lines also help drivers see trouble building up further down the road.
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. That figure is a reminder that the people and vehicles caught up around a crash site, not just those in the initial collision, carry much of the risk once traffic starts backing up behind it.
Frequently Asked Questions
Why do chain-reaction crashes happen?
They typically start when one vehicle slows or stops abruptly and following vehicles don't have enough following distance or time to react, so the impact passes backward through a line of traffic.
How can drivers avoid being caught in a pile-up?
Leaving extra space ahead, watching brake lights several cars up rather than just the car directly in front, and easing off the gas early when traffic appears to be slowing can all help reduce the risk of getting pulled into a chain-reaction crash.
What should I do if I'm stopped near a crash on the highway?
Turn on hazard lights, stay buckled in the vehicle if it's not safe to exit, and move to the shoulder only if the car is drivable and it's safe to do so. Watch for approaching traffic before stepping outside the vehicle.
How does fog or low visibility contribute to pile-ups?
Reduced visibility shortens the distance at which drivers can see slowing traffic ahead, which cuts their reaction time and raises the odds that a sudden stop turns into a multi-vehicle crash.
What to Do After a Multi-Vehicle Crash in Studio City, CA
If you're involved in a multi-vehicle crash, check on yourself and any passengers first, then move to a safe area away from traffic if possible. Call 911 and wait for help, even if injuries seem minor at first, since some symptoms take hours to appear. Getting a medical evaluation soon afterward and keeping any paperwork from first responders or towing services can make later steps easier, whether that means insurance claims or simply understanding what happened. Studio City residents dealing with freeway traffic delays after a crash should also check CHP or Caltrans updates before heading back onto the road.
