Collision Causes Major Traffic Disruptions in Diamond Bar

Traffic Collision on State Route 60 in Diamond Bar Causes Delays Today

📍 Diamond Bar, CA

📅 Published: May 12, 2025 at 04:33 AM

🔄 Updated: May 12, 2025 at 06:32 AM

Map showing the location of the accident in Diamond Bar, CA
Diamond Bar, May 12, 2025 -

A traffic collision involving two vehicles occurred today at the transition from Eastbound State Route 60 to Southbound State Route 57 in Diamond Bar, CA. The incident involved a black vehicle and a black Toyota Camry, which collided with a guard rail, leading to significant traffic disruptions during the early morning hours.

Emergency response units quickly arrived at the scene to manage traffic flow. Flares were deployed to control the situation, and lane closures were implemented to ensure safety while the area was cleared. The California Highway Patrol issued a signal alert, warning drivers of potential delays and congestion in the area for approximately one hour.

As a result of the traffic incident, motorists experienced backups and delays during the morning commute, particularly for those traveling on Eastbound State Route 60 transitioning to Southbound State Route 57. Traffic was temporarily halted to facilitate the removal of the vehicles involved in the collision and to assess the damage to the guard rail.

By around 4:00 AM, the signal alert was canceled, and traffic began to flow normally again as the scene was cleared. Drivers are advised to remain cautious and attentive in the area as residual effects from the traffic collision may linger.

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