Which criteria is NOT required for off-post DOT placard usage?

The criteria for off-post Department of Transportation (DOT) placard usage generally include specific details that must be adhered to for safety and compliance in transportation of hazardous materials. The hazard class number is essential as it indicates the specific type of hazard associated with the material being transported. The placard color is also crucial because it provides immediate visual cues about the nature of the risk, allowing for quick recognition of the type of hazard.

While the fire symbol is important for indicating fire hazards, it is not universally required across all categories of hazardous materials for off-post transportation. Therefore, its absence does not negate compliance with DOT placard regulations. The weight of materials is not a factor influencing the placard's requirements in the same way as hazard identification information. Understanding these distinctions helps ensure proper handling and transportation of hazardous materials while maintaining compliance with safety regulations.