Multi-Vehicle Collision Disrupts Traffic on US 101

Traffic Collision on US Highway 101 in San Mateo Causes Delays Today

📍 San Mateo, CA

📅 Published: August 30, 2025 at 04:05 PM

Map showing the location of the accident in San Mateo, CA
San Mateo, August 30, 2025 -

A traffic collision involving four vehicles occurred today on US Highway 101 North near Hillsdale Boulevard in San Mateo, CA. The incident was reported at approximately 2:36 PM and involved a black Audi SUV, which sustained rear axle damage and required a tow. Two white vehicles were also involved in the crash.

Emergency response teams arrived quickly at the scene to manage traffic and ensure safety. Multiple units were deployed to control the situation, helping to clear the roadway efficiently. By 3:38 PM, a police unit confirmed that all lanes were open, allowing traffic to resume its normal flow.

During the incident, drivers experienced delays and congestion in the area, particularly as vehicles navigated around the scene. The traffic incident caused a temporary backup, impacting the afternoon commute for many motorists.

Motorists are advised to remain cautious when traveling through this area, especially during peak hours. The California Highway Patrol continues to monitor traffic conditions to ensure smooth travel for all commuters.

This incident underscores the importance of safe driving practices and vigilance on the road. Drivers are encouraged to stay alert and follow traffic regulations to prevent future collisions.

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