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UPLAND, San Bernardino County, Calif., Oct. 2, 2026 — A multi-vehicle crash shut down eastbound I-210 near Campus Avenue on Wednesday evening, September 30, according to the California Highway Patrol. At least one injury was reported, and all eastbound lanes were briefly stopped while crews worked the scene.
The California Highway Patrol said the crash was first reported shortly before 7 p.m., when a caller in a black GMC Yukon reported the SUV blocking the number 2 lane. Additional reports described the Yukon involved with a gray pickup and two other unidentified vehicles, and a later update listed a black GMC Yukon, a silver Chevrolet 2500, and two more unknown vehicles as involved. The agency has not said how many vehicles were ultimately confirmed to be involved in the wreck.
A secondhand report relayed through OnStar described a gray GMC Yukon that had collided with an unknown vehicle and requested an ambulance, prompting the California Highway Patrol to upgrade the incident from a collision with unknown injuries to one with a medical response en route. All eastbound lanes were reported stopped around 7:11 p.m., and fire crews responded as well. A tow rotation was requested to help clear the roadway, and by about 7:20 p.m., the brake failure involved in the crash had been released, and fire crews had blocked off lanes 3 and 4.
The extent of the injuries has not been publicly detailed, and the circumstances that led to the chain of impacts remain under investigation. No names have been released.
We hope those who were hurt recover fully and quickly.
What Makes Multi-Vehicle Freeway Crashes So Damaging
On a freeway, the closing speeds between vehicles can be high even when drivers are not speeding, simply because vehicles merging, braking, or stopping create large gaps in momentum. When a vehicle traveling near highway speed strikes one that has already slowed or stopped, the energy that must be absorbed is tied to the speed difference, not just the posted limit. The bigger the gap, the more force is transferred through the vehicles' structures.
Weight differences compound the problem. A heavier pickup or SUV striking a smaller passenger car transfers more of its energy into the lighter vehicle, which typically has less structure to absorb it. Bumpers, crumple zones, and frame rails are engineered to collapse and manage force in a single, direct hit; they are far less effective when a vehicle is struck from an unexpected angle or hit a second or third time in a pileup.
According to the National Highway Traffic Safety Administration, 2,979 passenger-car occupants were killed in two-vehicle crashes involving a passenger car and a light truck in 2023. Airbags and seatbelts are designed around a single predictable impact; when a vehicle is struck more than once, from different directions, that design assumption breaks down, which is part of why chain-reaction crashes can leave more significant damage than a single-vehicle wreck at the same speed.
Frequently Asked Questions
Why does following distance matter so much on freeways?
Extra space gives a driver more time to react if traffic ahead brakes suddenly. On fast-moving freeways, even a small following gap can mean the difference between stopping in time and rear-ending another vehicle.
Do secondary crashes often follow an initial wreck?
Yes. Once a crash blocks lanes, approaching traffic has to slow or stop quickly, and drivers who don't see the slowdown in time can strike stopped vehicles or each other, adding to the original incident.
Why are multi-vehicle crashes harder to investigate?
With several vehicles involved, investigators have to reconstruct the order of impacts, determine which vehicle struck which, and sort through sometimes-conflicting witness accounts, which takes more time than a two-car crash.
What to Do After a Multi-Vehicle Crash in Upland, CA
If you're involved in or witness a multi-vehicle crash, try to move to a safe spot away from traffic lanes if your vehicle is drivable and it's safe to do so. Turn on hazard lights and call 911 to report injuries and the number of vehicles involved.
Even if you feel fine, get checked by a medical professional afterward; some injuries from being jolted or struck more than once don't show symptoms right away. Exchange information with other drivers when possible, and take photos of the scene if you're able to do so safely. Keep a copy of the CHP incident report for your records, since multi-vehicle crashes can take longer to fully document.
