Traffic Collision Causes Lane Closures on SR-78

Traffic Collision on State Route 78 East in San Marcos Causes Delays Today

📍 San Marcos, CA

📅 Published: September 21, 2025 at 04:33 AM

🔄 Updated: September 21, 2025 at 07:03 AM

Map showing the location of the accident in San Marcos, CA
San Marcos, September 21, 2025 -

A traffic collision occurred today on State Route 78 East near the Nordahl Road on-ramp in San Marcos, CA, leading to temporary lane closures and traffic adjustments. The incident involved one vehicle, a gray Nissan Altima, which collided with a barrier and subsequently impacted a concrete wall around 3:14 AM.

Emergency services responded quickly, with multiple units arriving on the scene to manage traffic and secure the area. Crews worked diligently to ensure safety and minimize disruption to traffic flow. The vehicle was later deemed drivable and released back onto the road.

As the morning progressed, traffic conditions began to improve, although some delays were reported as crews cleared the scene. Motorists were advised to remain cautious and expect potential backups while the area returned to normal.

This incident underscores the importance of road safety and the effectiveness of emergency response teams in managing traffic incidents. Drivers are encouraged to stay alert and follow traffic regulations to help prevent future collisions.

For ongoing updates on traffic conditions and incidents, local news sources and traffic advisories are recommended.

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