Cao Xian Expressway can get off today, so we need to check the health codes, travel codes and 48-hour nucleic acid certificates of passing vehicles and personnel. Cao county multi-department joint action, in accordance with the requirements of epidemic prevention and control work, in the highway entrance and exit of Cao county, strictly check the passing people and vehicles to ensure the first line of epidemic prevention and control in the county. Check the passing vehicles and personnel one by one, and carry out the "two yards" joint inspection, temperature measurement, information registration and nucleic acid detection in an orderly manner, so that every car must be inspected and everyone must be inspected, and firmly grasp the first pass of "external defense input".