What type of placard is used for radioactive materials?

The yellow and white placard with a radiation symbol is specifically designated for radioactive materials. This placard is crucial for identifying hazards associated with the transportation of substances that emit radiation, such as certain isotopes used in medicine or industry. The color scheme and symbol help ensure that individuals handling or coming into proximity with the materials are adequately warned of potential exposure to radiation, allowing them to take proper safety precautions.

The other placards referenced have specific meanings as well but are not related to radioactive materials. The red and white placard indicates flammable substances, while the blue and white placard signifies explosives. A green and white placard is employed for biological substances, each serving its own distinct purpose in ensuring safety during the transportation of different hazardous materials.