Significant Traffic Disruptions on US Highway 101

Traffic Collision on US Highway 101 in Petaluma Causes Delays Today

📍 Petaluma, CA

📅 Published: July 4, 2025 at 11:32 AM

🔄 Updated: July 4, 2025 at 02:00 PM

Map showing the location of the accident in Petaluma, CA
Petaluma, July 4, 2025 -

A traffic collision on northbound US Highway 101 (US101) in Petaluma, CA, has caused significant traffic disruptions today. The incident occurred during the morning commute at approximately 10:51 AM and involved two vehicles: a white Toyota and another vehicle identified only by its incident identifier.

As a result of the collision, lane closures were implemented on the northbound side of US101 near the Petaluma Boulevard North on-ramp. Emergency units quickly arrived at the scene to establish control and manage traffic flow. Witnesses reported that the white Toyota was side-swiped by the other vehicle, which continued traveling northbound after the incident.

Tow services were called to assist with the removal of the vehicles involved in the traffic incident. Motorists in the area experienced delays and congestion as emergency responders worked to clear the scene. Authorities advised drivers to expect backups and to consider alternate routes to avoid the affected area.

Traffic conditions are expected to improve as the situation is resolved, but motorists should remain cautious and stay informed about ongoing updates. This incident highlights the importance of safe driving practices on busy roadways.

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