A tractor trailer carrying 1001 lbs of organic peroxides, other than Type B, requires which placard color?

• A. a white placard.
• B. an orange placard.
• C. a yellow placard.
• D. no placard.

Answer: (C)

Placards tell responders what hazard class is being carried. Organic peroxides are Class 5.2 oxidizers, and the standard placard color for that class is yellow. Since the load is 1001 pounds, it meets the quantity threshold for requiring a placard, and these should display the yellow sign for organic peroxides (not the other colors, which indicate different hazard classes). The note about Type B doesn’t change the color here—the yellow placard is the correct identifier for organic peroxides of this type and quantity.