Multi-Vehicle Collision Causes Major Traffic Delays

Traffic Collision on U.S. Highway 101 in San Mateo Causes Delays Today

📍 San Mateo, CA

📅 Published: September 25, 2025 at 04:36 PM

Map showing the location of the accident in San Mateo, CA
San Mateo, September 25, 2025 -

A traffic collision involving three vehicles occurred today on the southbound lanes of U.S. Highway 101 (US-101) near the 3rd Avenue off-ramp in San Mateo, CA. The incident took place around 3:08 PM and involved a black Toyota RAV4, a white Ram truck, and a big rig.

Emergency response teams quickly arrived at the scene to manage the situation and control traffic flow. Due to the collision, multiple lanes were closed, resulting in significant traffic delays and congestion in the area. Motorists were advised to seek alternate routes to avoid the backup. A tow truck was called to the scene to assist with the removal of at least one vehicle involved in the incident.

Traffic management units were deployed to direct vehicles off the roadway, ensuring safety for all drivers in the vicinity. By approximately 3:46 PM, the roadway was reported to be clear, allowing traffic to resume normal flow. However, drivers should remain cautious as residual delays may linger in the aftermath of the traffic incident.

This traffic collision highlights the importance of staying alert while driving, especially during busy afternoon hours. For real-time updates on traffic conditions, motorists are encouraged to check local traffic reports.

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