What is NOT a method of hazard communication required in shipping?

The correct answer is that weights of packages are not required as a method of hazard communication in shipping. Hazard communication is essential for ensuring safety when transporting hazardous materials, and it typically involves clearly presenting information about the contents and associated risks.

Shipping papers, markings on packages, and labels on packages are all crucial components of hazard communication. Shipping papers include detailed information about the hazardous material, including its proper shipping name, hazard class, and emergency response guidance. Markings on packages help identify the presence of hazardous materials visually, ensuring that handlers and emergency responders are aware of potential risks. Labels on packages provide specific hazard warnings and instructions that are vital for safe handling and transportation.

Because weights do not convey information about hazards or risks associated with materials being shipped, they are not considered a method of hazard communication.