UN/DOT placards indicate general hazard recognition by

UN/DOT placards indicate general hazard recognition by

• A. Providing the UN hazard class number
• B. Showing the packing group
• C. Giving the UN hazard class number
• D. Indicating the country of origin

Answer: (C)

Placards signal the general hazard by displaying the UN hazard class number. That small number in the placard’s corner identifies the broad category of danger (for example, 3 indicates flammable liquids, 6 indicates toxic substances, 8 indicates corrosives). This quick cue lets responders and bystanders recognize the type of hazard they’re dealing with and apply appropriate precautions right away, even without knowing the exact substance. The UN number, which is a four-digit code for specific materials (like UN 1993 for flammable liquids), is used mainly on shipping papers and some packaging labels, not for rapid hazard recognition on the placard itself. Packing group numbers (I–III) relate to the severity of the hazard but are not the primary feature shown to convey general hazard information on the placard. Country of origin isn’t indicated on these placards and isn’t part of hazard recognition.

Placards signal the general hazard by displaying the UN hazard class number. That small number in the placard’s corner identifies the broad category of danger (for example, 3 indicates flammable liquids, 6 indicates toxic substances, 8 indicates corrosives). This quick cue lets responders and bystanders recognize the type of hazard they’re dealing with and apply appropriate precautions right away, even without knowing the exact substance.

The UN number, which is a four-digit code for specific materials (like UN 1993 for flammable liquids), is used mainly on shipping papers and some packaging labels, not for rapid hazard recognition on the placard itself. Packing group numbers (I–III) relate to the severity of the hazard but are not the primary feature shown to convey general hazard information on the placard. Country of origin isn’t indicated on these placards and isn’t part of hazard recognition.