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CHINO, San Bernardino County, CA, Sept. 21, 2026 — A semi-truck rolled over on westbound State Route 60 near Central Avenue early Monday morning, September 21, according to the California Highway Patrol. At least one other vehicle was reportedly involved, and the truck's driver was injured, the agency said.
The crash was reported shortly before 1 a.m. near the westbound Central Avenue off-ramp, according to CHP traffic logs. A witness reportedly described a green Lexus SUV, a gray Ford pickup and the semi-truck involved in the collision, though the sequence of events has not been confirmed.
The truck came to rest on its side up an embankment on the right shoulder, CHP radio traffic indicated. The truck's driver was transported to Pomona Valley Hospital Medical Center with injuries, the agency reported. The condition of anyone else involved has not been released.
Responders shut down lanes and the westbound Central Avenue on-ramp while crews worked the scene, according to CHP. Chino police reportedly assisted with closing the on-ramp. Heavy-duty tow crews were called to remove the overturned trailer, and lanes were reopened after cleanup, the CHP log shows.
The circumstances that led to the rollover remain under investigation. No further details on cause or contributing factors have been released.
Our thoughts are with those who were injured, and we wish them a full recovery.
Where Semi-Truck Rollovers Tend to Cluster on Freeways Like SR-60
Rollover crashes involving large trucks tend to concentrate in specific spots on freeways: sweeping curves, off-ramps and on-ramps, and interchange areas where a loaded trailer has to slow or change direction quickly. Elevated embankments and shoulders near ramps also give a truck somewhere to go once it tips, which is where these crashes end up.
Overnight and early-morning hours add another layer. Traffic is lighter, speeds tend to run higher, and a truck driver's reaction time can be slower due to fatigue. A shift in cargo, a sudden lane change, or a vehicle merging unexpectedly near a ramp can be enough to start a rollover when a truck is carrying weight through a curve or grade.
According to the Insurance Institute for Highway Safety, 24 percent of fatally injured occupants in crashes classified as other, which were mostly rollovers, were belted in 2023. That figure points to how seat belt use goes unconfirmed or unreported in rollover crashes generally, not just to any single incident.
Frequently Asked Questions
What typically causes large-truck rollovers or multi-vehicle crashes involving semis?
Common factors include speed relative to a curve or ramp, sudden lane changes, driver fatigue, mechanical issues like tire failure, and cargo that shifts or is loaded unevenly. Investigators usually look at all of these before determining a cause.
How can other drivers share the road safely with large trucks?
Give trucks extra following distance, avoid lingering in blind spots along the sides and rear, and expect wider turns and longer stopping distances. Passing quickly and merging back into a visible position also helps.
Does driver fatigue play a role in truck crashes?
It can. Federal hours-of-service rules limit how long commercial drivers may operate without rest, but fatigue remains a factor investigators check in crashes that happen overnight or in early-morning hours.
What should I do if I'm involved in a crash with a commercial truck?
Move to a safe location if possible, call 911, and wait for law enforcement to document the scene. Seek a medical evaluation even if injuries seem minor, since some symptoms appear later.
What to Do After a Semi-Truck Rollover Crash in Chino, CA
If you're involved in or witness a truck rollover, try to move away from traffic lanes and call 911 right away. Stay clear of the truck itself, especially if cargo has spilled or fuel is leaking, and let responders handle the scene.
Anyone involved should get checked by a medical provider even if they feel fine at first, since adrenaline can mask injuries. Keep any paperwork from police or CHP, including a case or incident number, in case it's needed for insurance or follow-up questions.
If you're a witness, stick around long enough to give a brief statement to officers if it's safe to do so. Details like vehicle positions and what you saw beforehand can matter later, even in ways that aren't obvious at the scene.
