A traffic collision was reported on southbound Interstate 15 near Summit Avenue in Rancho Cucamonga on September 14, 2026. The California Highway Patrol classified the incident as a collision with no reported injuries.
The crash was logged at approximately 10:18 p.m. in the area of southbound I-15 and Summit Avenue. CHP identified the location as the Summit Avenue interchange area within its Rancho Cucamonga coverage zone.
A subsequent CHP update at about 10:22 p.m. indicated that towing assistance had been requested for the scene. The dispatch information did not identify any additional vehicles, roadway closures or lane blockages.
No injuries were reported in the available CHP information. The dispatch record did not provide further details about the circumstances of the collision or the status of the vehicles.
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