What information do UN/DOT placards indicate for hazard recognition?

What information do UN/DOT placards indicate for hazard recognition?

• A. The material's flash point
• B. The shipping origin
• C. The UN hazard class number
• D. The number of hazard warnings on the label

Answer: (C)

Placards are meant for quick hazard recognition, showing you the category of danger you’re dealing with. The number in the lower part of the placard identifies the hazard class or division, which tells you the general type of risk (such as flammable liquids, corrosives, or toxic substances) and guides the appropriate safety measures, PPE, and emergency actions. It doesn’t convey the material’s flash point, the shipment’s origin, or how many hazard warnings are on the label. The UN number is used for identifying the exact substance in documentation, not for deciding the hazard category from the placard.

Placards are meant for quick hazard recognition, showing you the category of danger you’re dealing with. The number in the lower part of the placard identifies the hazard class or division, which tells you the general type of risk (such as flammable liquids, corrosives, or toxic substances) and guides the appropriate safety measures, PPE, and emergency actions. It doesn’t convey the material’s flash point, the shipment’s origin, or how many hazard warnings are on the label. The UN number is used for identifying the exact substance in documentation, not for deciding the hazard category from the placard.