What is the definition of "flammable cargo"?

The definition of "flammable cargo" refers specifically to materials that can easily ignite and catch fire under normal conditions. This characteristic is crucial because it helps in understanding the risks associated with transporting such materials. Flammable cargo generally includes liquid or solid substances that have a low flash point, meaning they can release vapors that ignite at relatively low temperatures. This property is vital for safety protocols during storage, transportation, and handling.

In contrast, other options address different hazards or characteristics not directly related to the flammability of the cargo. For example, toxic fumes and environmental hazards refer to chemical dangers and ecological impact, while cargo stored in high-pressure containers might pertain to gases or pressurized liquids rather than flammable properties. Therefore, recognizing flammable cargo allows for specific safety measures and regulations to be enforced to mitigate fire risks during operations involving these materials.