Placards

Placards are flat panels, boards, cards, or signs designed to convey information, warnings, or messages. They may be attached to buildings, vehicles, or equipment, carried by individuals, or displayed in public spaces. The term derives from the French placard, meaning a notice or poster.

Commonly used in everyday life, placards display safety notices, instructions, advertisements, or directions. They can be temporary, such as event posters or warning notices, or permanent, like workplace safety signs or architectural plaques. Design often emphasizes legibility, with clear symbols and concise text.

In politics and social movements, placards are often carried in marches or rallies. These signs, typically made of cardboard, plastic, or lightweight metal, bear slogans, logos, or calls to action and are used to communicate messages publicly and visibly.

Placards also play a crucial role in the transportation of dangerous goods. Hazard placards are standardized signs attached to vehicles and containers to indicate hazard class and handling requirements. They are color coded and feature symbols to warn first responders and handlers. International conventions and national regulations govern their size, wording, and placement.

Materials range from printed paper or cardstock to laminated boards, plastic, or metal. Reflective or self-luminous finishes improve visibility in low light. In many jurisdictions, placards used for safety or regulatory compliance must meet specific standards and be maintained to remain readable.