At about 0:51 on April 4, 2021, a four-vehicle collision occurred at a distance of 898 kilometers from the Yancheng section of the Jiangsu Yancheng section of the Shenhai Expressway.

  After preliminary investigation, a large truck (Liao B3Y69) suddenly crossed the central guardrail and collided with an opposing bus (Shanghai DL4452), causing the bus to roll over, causing 7 deaths and 19 injuries on the bus. , 2 drivers and passengers on the truck died.

Subsequently, the two trucks driving behind the bus rolled over in order to avoid accidents in front, causing the death of two drivers and passengers of the truck.

  At present, the cause of the accident is under further investigation.

After the accident, the Ministry of Public Security attached great importance to it and immediately dispatched a working group to the scene of the accident to guide the investigation and disposal of the accident.