Three-Vehicle Collision Causes Traffic Delays

Traffic Collision on State Route 57 North in Diamond Bar Causes Lane Closures Today

📍 Diamond Bar, CA

📅 Published: September 5, 2025 at 06:02 PM

🔄 Updated: September 5, 2025 at 06:32 PM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, September 5, 2025 -

A traffic collision involving three vehicles occurred today at the intersection of State Route 57 North and Diamond Bar Boulevard in Diamond Bar, CA. The incident took place around 4:52 PM and involved a blue Toyota RAV4, a black Toyota Tundra, and a black Hyundai. All vehicles were determined to be driveable and were removed from the scene shortly after.

The traffic incident resulted in temporary lane closures as California Highway Patrol (CHP) units were dispatched to manage the situation. Officers worked diligently to control traffic flow and ensure safety at the scene. As a result, drivers experienced some delays and congestion in the area during the incident.

By approximately 5:57 PM, all vehicles had been cleared from the roadway, and traffic began to return to normal. The CHP's prompt response and effective scene management helped minimize disruption for motorists traveling through this busy intersection.

Motorists are advised to remain vigilant and follow traffic regulations, especially during peak hours. For ongoing updates on traffic conditions in Diamond Bar, CA, local news sources and traffic reports can provide timely information.

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