How much of most hazard classes of dangerous goods requires placarding for airfreight and intermodal containers?

For most hazard classes of dangerous goods, placarding is required for airfreight and intermodal containers irrespective of the quantity being transported. This requirement aligns with safety regulations put in place to ensure that all personnel handling, loading, or unloading the transport know that hazardous materials are present. The purpose of placarding is to communicate the potential risks associated with the cargo, providing crucial information that can help mitigate dangers during transport.

Even small amounts of hazardous materials can pose risks, therefore, regulations mandate that placards should be displayed at all times when such goods are being transported, ensuring a consistent safety standard across the transport industry. This approach minimizes accidents and enhances safety for workers and emergency responders by providing necessary information about the nature of the hazards involved. Thus, the requirement for placarding applies to any quantity of dangerous goods, emphasizing the importance of safety and awareness in hazardous material handling.