What is the term for the picture displayed at the top of a placard?

The term for the picture displayed at the top of a placard is referred to as the hazard class symbol. This symbol provides critical visual information about the type of hazard that the substance or materials may present during transport. It is designed to be easily recognizable and offers immediate knowledge regarding the risks associated with the hazardous materials, allowing emergency responders and other individuals to take appropriate actions if necessary.

A hazard class symbol typically corresponds to specific classes or divisions of hazardous materials, such as flammable, toxic, or corrosive substances, and is regulated under transportation safety guidelines. This classification is fundamental in ensuring safety during the handling and transport of hazardous materials.

The other terms listed, while related to hazardous materials, describe different aspects of hazard communication. For instance, a shipping label includes more detailed information about the contents, including the name and address of the shipper, as well as the proper shipping name and UN number, but does not specifically refer to the picture at the top of a placard.