Multi-Vehicle Collision Causes Major Traffic Jam

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

📍 San Marcos, CA

📅 Published: September 18, 2025 at 03:35 AM

Map showing the location of the accident in San Marcos, CA
San Marcos, September 18, 2025 -

A significant traffic collision occurred today on State Route 78 West in San Marcos, CA, involving four vehicles. The incident took place in the early morning hours and has led to considerable traffic disruptions for both eastbound and westbound drivers.

The collision involved a solo vehicle traveling in the westbound lane, an unknown vehicle that impacted a rail, and a vehicle identified as “1125” with front-end damage in the slow lane. Additionally, a white Honda Civic sedan was reported blocking the fast lane, which has further complicated traffic flow. Debris from the incident was scattered across all lanes, creating hazardous conditions for motorists.

Emergency services quickly arrived on the scene to manage traffic and control the situation. Units were deployed to ensure the area was safe and to minimize further disruptions for drivers. As a result of the collision, significant lane blockages were reported, particularly affecting the fast lane, leading to delays and congestion for travelers in the area.

Motorists are advised to seek alternative routes to avoid the traffic backup caused by this incident. The California Highway Patrol is actively working to clear the scene and restore normal traffic flow as soon as possible.

Were you or someone you know involved in this accident?

If you would like the full incident log, we can send it to you directly.

Request Full Incident Log

Disclaimer

The content on this website is auto-generated and based on publicly available information. While we strive to provide accurate and timely updates, we cannot guarantee the accuracy, completeness, or reliability of the information presented. This content is for informational purposes only and should not be used as the basis for decision-making. We encourage you to independently verify any facts or details. For the most accurate and up-to-date information, please contact the California Highway Patrol (CHP) directly. The website and its owners are not responsible for any errors, omissions, or actions taken based on the information provided.