The person in charge of the Xiong family said that he had no idea how the documents were obtained, as the “person responsible for handling the matter” died in the accident. Before the incident, the vehicle was intended to take the middle lane, but due to maintenance work, the workers did not allow the driver to use that lane. The Regulations on the Management of Road Use by Vehicles Engaged in Overdimensional Transport state that if such vehicles fail to travel on roads at the permitted times, along the permitted routes, and at the permitted speeds, it is considered illegal overdimensional transport. The aforementioned regulations also state that if the total height of the vehicle and its load exceeds 4.5 meters measured from the ground, or the total width exceeds 3.75 meters, or the total length exceeds 28 meters, or the total weight exceeds 100,000 kilograms, or in other situations that may severely affect the integrity, safety, and smoothness of roads, it is necessary to submit a contour diagram showing the overall external dimensions of the vehicle and its load at the time of loading, along with an escort plan. The escort plan should include details such as the configuration of escort vehicles, the staffing for the escorts, an explanation of the escort route, rules for carrying out the escort operation, and procedures for dealing with emergencies.