What are placards used for in pesticide transportation?

Placards are important tools used during the transportation of hazardous materials, including pesticides, to ensure safety and awareness among those handling or encountering the transportation vehicle. The correct answer highlights that placards serve to warn of hazardous materials being transported.

When pesticides are classified as hazardous, they may pose risks to health and the environment, and thus it is crucial that individuals nearby are aware of these risks. The use of placards on transport vehicles communicates essential information about the nature of the materials being carried. This can help emergency responders, transport personnel, and the public to take necessary precautions if an incident occurs.

While indicating the type of pesticides on board and providing emergency contact information are important logistical details, they are not the primary function of placards. Placards focus specifically on conveying the hazard associated with the materials to ensure safety protocols are followed. Labeling the driver of the vehicle does not pertain to the role of placarding in the context of hazardous material transport. Thus, the correct answer underscores the safety purpose of placards in highlighting the transport of potentially dangerous substances.