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ANTIOCH, Contra Costa County, Calif., Nov. 13, 2026 — A hit-and-run crash left at least one person injured on Thursday afternoon, November 12, on eastbound State Route 4 near the Lone Tree Way off-ramp, according to the California Highway Patrol.
The collision involved a gray Tesla Model Y and a maroon Mazda 6, the CHP said. It was reported shortly after 2 p.m. on the eastbound SR-4 off-ramp to Lone Tree Way in Antioch. The crash left the middle lane blocked.
Authorities listed the incident as a hit-and-run with injuries, meaning one of the drivers reportedly left the scene before officers arrived. The extent of the injuries has not been released. The CHP has not said which vehicle fled or whether the fleeing driver has been identified.
The crash remains under investigation. The CHP has not released further details on how the collision happened or whether charges are pending.
We wish those injured a full recovery.
More on Crashes in Antioch, CA
This crash happened on State Route 4 in Antioch, CA. We cover crashes across Contra Costa County as they're reported, and you can browse the latest in our Contra Costa County accident reports.
Frequently Asked Questions
How do weather and road conditions affect crash risk?
Wet pavement, glare, and reduced visibility can all make it harder for drivers to stop in time or keep control, though conditions at the time of this crash have not been detailed.
What should someone do immediately after a car accident?
Move to a safe spot if possible, call 911, exchange information with other drivers if they remain at the scene, and document the area with photos before vehicles are moved.
Where do most traffic accidents happen?
Many crashes cluster at highway interchanges, on-ramps, and off-ramps, where merging traffic and sudden lane changes raise the chance of a collision.
What should you do if involved in a hit-and-run?
Try to note the other vehicle's description, plate number, and direction of travel, then report it to police as soon as possible so they can begin tracking down the driver.
