A control that displays information Typically placards are used in document windows as a way to quickly modify the view of the contentsfor example, to change the current page or the magnification
Similar to a label in that it pictorially illustrates the hazard class of material being shipped Is placed on the transport vehicle rather than on the material container
Warning symbol of a square-on-point configuration mounted on each side and each end of a truck, rail car, or freight container which informs th epublic and emergency personnel of the hazardous nature of cargo, as specified in 49 CFR Part 172
A placard is a large notice that is carried in a march or displayed in a public place. The protesters sang songs and waved placards. a large notice or advertisement on a piece of card, which is put up or carried in a public place (plaquier )