What placard is required on a tractor-trailer carrying 454 kg. (1001 lbs.) of organic peroxides?

The correct placard for a tractor-trailer carrying 454 kg (1001 lbs.) of organic peroxides is the yellow placard. Organic peroxides are classified under the United Nations (UN) transport regulations as hazardous materials, specifically due to their ability to decompose and cause combustion or explosions under certain conditions.

The yellow placard represents the hazard associated with organic peroxides and is used to indicate that the cargo presents a specific level of risk. It is a regulatory requirement for vehicles transporting hazardous materials to display the appropriate placard to inform emergency responders and others about the potential dangers involved.

Understanding the specific classification and placarding system is crucial for ensuring safety during transport and handling of hazardous materials, as it aids in the identification of the risks associated with the cargo.