What color is a DOT transportation placard for a poison?

The correct color for a DOT transportation placard that indicates a poison is white. This color is designated for poisons in the hazardous materials classification system used by the Department of Transportation (DOT). The placard is an essential visual identifier that alerts handlers, transporters, and emergency responders to the nature of the hazard associated with the material being transported.

Each color of the DOT placards represents a specific hazard class, and understanding these colors is crucial for safely handling hazardous materials. The use of white specifically for poisons ensures that anyone handling the shipment can quickly recognize the danger, promoting safety and effective emergency response procedures.