What is the function of placards in HAZMAT transportation?

The function of placards in HAZMAT transportation is to provide visual identification of hazardous materials being transported. Placards are essential tools used to communicate information about the nature of the materials being carried, such as whether they are flammable, toxic, or corrosive. They serve as immediate visual cues for first responders and others who may come into contact with the shipment, ensuring that the appropriate safety precautions are taken. By displaying standardized symbols and colors, placards help to mitigate risks during transportation and handling, thereby enhancing safety and facilitating prompt responses to emergencies.