WINDSOR, Sonoma County, Calif., Sept. 23, 2026 — A rollover crash involving a big rig and a pickup truck towing a trailer blocked lanes on northbound US-101 near the Shiloh Road onramp on Tuesday morning, September 22, according to the California Highway Patrol.
The crash was reported around 6:28 a.m. north of Shiloh Road. An initial notification described a rollover with two airbags deployed. Dispatch logs indicate a white big rig was involved with a white Ford-type pickup truck, and a separate log entry noted a white pickup hauling a trailer facing the wrong way on the right shoulder.
The police requested an ambulance for injuries at the scene, though the extent of any injuries has not been released. Vehicles ended up on the right shoulder, and debris was reported in the middle lanes, prompting a call for cleanup. A tow rotation was also requested to clear the wreckage.
By midmorning, responders reported the wheels on what was described as a chipper unit appeared intact, raising the possibility that at least one vehicle could be towed rather than dismantled at the scene. Detectives had not released further details on the cause of the crash or the number of people involved as of Tuesday.
We wish the injured a complete and speedy recovery.
What the Numbers Show About Rollover Crashes Involving Trucks
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 a pattern seen across rollover crashes generally: many of the people killed were not restrained when the vehicle went over.
Rollovers involving large trucks or pickups towing trailers carry added risk because of how weight shifts during a sudden turn or loss of control. A trailer or heavy load can pull a vehicle off its wheels even at moderate highway speeds, particularly during lane changes, sudden braking, or when a vehicle overcorrects after drifting onto a shoulder.
Because rollovers usually scatter debris and leave vehicles blocking multiple lanes, they also tend to draw a heavier emergency response than a typical two-vehicle crash, including tow rotations and lane closures that can last for hours.
Frequently Asked Questions
What makes truck accidents more dangerous than car crashes?
The size and weight difference between a large truck and a passenger vehicle means more force is transferred in a collision. Trucks also take longer to stop and maneuver, which can make it harder for drivers to avoid a crash once one starts to develop.
What are a truck's blind spots and why do they matter?
Large trucks have wide blind spots along both sides, directly behind the trailer, and close to the front of the cab. Vehicles that linger in these zones may not be visible to the truck driver, raising the risk of a collision during lane changes or turns.
What is an underride crash?
An underride crash happens when a smaller vehicle slides partly or fully beneath a truck's trailer during a collision, usually because the trailer sits higher off the ground than the vehicle's bumper and safety structure.
What are common causes of large-truck accidents?
Driver fatigue, following too closely, cargo shifting or improper loading, mechanical failure, and sudden lane changes are frequently cited factors in large-truck crashes, though each incident's cause is determined through investigation rather than assumption.
What to Do After a Truck Rollover Crash in Windsor, CA
If you're involved in or witness a rollover crash, move to a safe location away from traffic and call 911 if it hasn't already been reported. Even if injuries seem minor, a medical evaluation is worth getting soon after, since some injuries from a rollover, such as those affecting the neck, back, or head, aren't always obvious right away.
Take photos of the scene if it's safe to do so, and get contact information from any witnesses nearby. File a report with local police or the CHP if one hasn't already been generated, and keep a copy for your records. Windsor residents dealing with the aftermath of a highway crash should also follow up with their insurance company promptly to start the claims process.
