Major Traffic Disruption on State Route 78

Traffic Collision on State Route 78 East in Oceanside Causes Delays Today

📍 Oceanside, CA

📅 Published: August 4, 2025 at 05:38 PM

Map showing the location of the accident in Oceanside, CA
Oceanside, August 4, 2025 -

A traffic collision involving two vehicles occurred today on State Route 78 East near Interstate 5 in Oceanside, CA, leading to significant traffic disruptions. The incident, which took place around 4:42 PM, involved a pickup truck towing a car trailer and a semi truck.

The collision resulted in lane 2 being blocked, causing a backup in eastbound traffic on State Route 78. Emergency response units from the California Highway Patrol (CHP) and Freeway Service Patrol (FSP) quickly arrived at the scene to manage the situation and restore traffic flow.

By 4:55 PM, traffic was reported to be heavily congested, impacting both State Route 78 and Interstate 5. Responders worked diligently to move the vehicles to the right side of the roadway, helping to alleviate some of the delays. One vehicle was confirmed to be driveable, while the other was assessed for towing.

By 5:07 PM, all vehicles had been successfully moved to the right side of the road, allowing for the gradual reopening of lanes and a return to normal traffic conditions. Motorists are advised to remain cautious and expect residual delays as traffic resumes.

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