At the above time, a passenger car with license plate 26F-00851, driven by Mr. Nguyen Van Huong, was traveling in the direction of Hanoi - Son La.
When arriving at the above location, the car suddenly (suspected of brake jam) collided with the signal system and corrugated iron guardrail in the bridgehead area, then overturned onto the bridgehead embankment.

The consequence of the accident was 3 deaths, 1 injury (who was taken to Yen Chau Hospital for emergency treatment); the vehicle was heavily damaged and some traffic safety works were damaged.

Immediately after the incident occurred, Road Management Unit No. 10 coordinated with the Traffic Police force, Road Management Office I.1 and local authorities to urgently organize rescue and relief, protect the scene, divert traffic, and ensure smooth traffic on the route.
Currently, functional agencies are continuing to investigate and clarify the cause of the accident according to the provisions of law.
The current situation at the accident site is full of traffic safety signal systems, and the road surface is smooth.