Available 
POMONA, Los Angeles County, Calif., Nov. 9, 2026 — At least one person was reportedly hurt after a four-vehicle crash blocked lanes on northbound State Route 71 at Rio Rancho Road on Sunday morning, November 8, according to the California Highway Patrol.
The crash was reported shortly before 11:40 a.m. just north of Rio Rancho Road. Vehicles involved reportedly included a maroon SUV, a white Honda and a white sedan. One person involved told dispatchers the crash involved four vehicles and that it was blocking two lanes, and a caller reported that the vehicles did not look driveable.
The pileup initially blocked the number one lane, and reports to the CHP said blockage grew to as many as three lanes before all lanes were shut down for a time. Heavy traffic built behind the scene, and the CHP warned of a need to slow traffic approaching the backup. Tow trucks were called to the scene to clear the wrecked vehicles.
By late morning, the CHP log noted that all vehicles had been moved to the center divider and that all lanes had reopened. The extent of the reported injury was not detailed in the log, and the CHP has not released further information on those involved. The incident remains under review by investigators.
We hope everyone who was hurt makes a full and speedy recovery.
Intersection Crashes in Pomona and Across California
This multi-vehicle crash happened at State Route 71 and Rio Rancho Road in Pomona, California. Readers following crash news in Los Angeles County can find more about intersections across the state on our California intersection crash information.
Frequently Asked Questions
How can drivers avoid getting caught in a multi-vehicle pileup?
Keeping a safe following distance and watching traffic several cars ahead gives drivers more time to react if vehicles suddenly slow or stop. Reducing speed in heavy or fast-moving traffic also helps.
What should I do if I come up on a crash blocking lanes on the highway?
Slow down well before reaching the scene, turn on hazard lights to warn drivers behind, and move into an open lane if it's safe to do so. Avoid stopping in a travel lane unless traffic is fully halted.
Why does following distance matter so much in highway crashes?
A short following distance leaves little time to brake if the vehicle ahead stops suddenly, which is how chain-reaction crashes involving several vehicles usually start.
Does low visibility, like fog, play a role in pileups?
Reduced visibility can make it harder for drivers to see slowing or stopped traffic ahead, raising the chance that one crash triggers additional collisions behind it.
