A caution board, also known as a caution sign or warning board, is a visual safety device designed to alert people to potential hazards or dangers in a specific area. These boards typically consist of bright-colored, eye-catching materials with prominent black lettering or symbols to convey a clear warning message.

Caution boards serve as an important part of safety protocols in various settings, including construction sites, industrial facilities, roadworks, and public spaces. They communicate essential information and instruct people to be cautious, stay alert, and take necessary precautions to avoid accidents or injuries.

The messages on caution boards can vary depending on the situation and context. By prominently displaying caution boards in hazardous areas, businesses, organizations, and authorities can promote safety awareness and reduce the risk of accidents, helping to protect the well-being of workers, visitors, and the general public.