Placard

Placard

[plak-ahrd, -erd]
A placard is a sign or sign-like device attached to or hung from a vehicle to indicate information about the operator (of a vehicle) or the contents of the vehicle or building.

Buildings

A placard is placed on a building to indicate special information about that building. The most common placard which had been used is the Fallout shelter black and yellow trefoil indicating that a building was specifically prepared for use for emergency shelter in the event of a nuclear explosion in the area of the particular building. Temporary placards may be placed on buildings such as warning signs over tenting to indicate the building is being fumigated and that no one should enter.

In some locations it is common practice, and in some areas (such as California) it is required by law that any primary entrance to a commercial building have a placard attached above the entrance door(s) reading "This door to remain unlocked during business hours.

Vehicles

The two most common placards in general use on vehicles are handicapped privilege tags for personal automobiles, and hazardous materials warning signs for commercial vehicles. There are other types, such as the "wide load" signs used when mobile homes are transported by road.

Commercial vehicle placards are of two general types, the single indicator, where in specific information of a fixed nature is displayed by the sign, such as the yellow "oxidizing agent" sign below, and the NFPA "fire diamond" style device which can be changed to depict new information as the contents of the vehicle change, and which carries information about the compound being carried, its flamability and resistance to water, for example.

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This is an example of a fixed sign. This is another example of a fixed sign, although the information is basically for the use of emergency responders. This is an example of a changeable sign. This type of sign is sometimes displayed as a fixed sticker, but are often made with each of the four quadrants having either a slot to have different values inserted, or have a flip device allowing each of the quadrants to be changed.

References

External links

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