Traffic Collision Causes Delays on US 101

Traffic Collision on US Highway 101 in Petaluma Causes Delays Today

📍 Petaluma, CA

📅 Published: August 21, 2025 at 12:31 PM

🔄 Updated: August 21, 2025 at 06:00 PM

Map showing the location of the accident in Petaluma, CA
Petaluma, August 21, 2025 -

A traffic collision on US Highway 101 South in Petaluma, CA, caused significant delays during the morning commute today. The incident, which involved two vehicles—a grey BMW and a silver BMW SUV—occurred around 11:56 AM, blocking one lane on the off-ramp at Petaluma Boulevard North.

Emergency response units quickly arrived on the scene to manage traffic and secure the area. One of the vehicles was impounded, while the other was being handled on-site. The traffic incident created congestion and delays for drivers heading outbound on US Highway 101, leading to backups during peak travel times.

By approximately 1:06 PM, a police unit confirmed that all lanes were reopened, alleviating the traffic congestion that had formed. The California Highway Patrol coordinated the response to ensure the area was cleared efficiently, allowing traffic to resume its normal flow.

Motorists are advised to remain cautious and aware of potential traffic incidents in the area. This incident serves as a reminder of the importance of safe driving practices, especially during busy travel periods.

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