Which placarding method is used for mixed loads of hazardous materials?

The method used for mixed loads of hazardous materials is combined placarding. This approach is necessary when a vehicle is transporting more than one type of hazardous material, which may have different hazard classes. Each class has its own specific placard that indicates the nature of the hazard, and combined placarding allows for the display of multiple placards on a single vehicle.

In practice, combined placarding requires that all applicable placards for the various hazardous materials in the load are displayed, ensuring that anyone who comes into contact with the vehicle is aware of the various hazards. This is crucial for safety, as it informs emergency responders and the general public about potential risks, enabling them to take appropriate precautions.

In contrast, danger symbols, Table 2 placarding, and single placarding do not adequately cover the requirements for transporting mixed loads. Danger symbols are used for specific hazards but lack the comprehensive nature needed for mixed loads. Table 2 placarding refers specifically to the use of the DOT's Table 2 to determine the proper placards based on the materials being transported, but it does not specifically address the handling of mixed loads as effectively as combined placarding does. Single placarding only requires the display of one placard for one type of hazardous material, failing to