Pictograms
These are used to warn, guide or protect, and so must be immediately decipherable in such a way that they cannot be misunderstood. This means that pictograms must be independent of culture so to be a global language of communication.
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Lance Wyman's Mexico City Metro Signs - Example of using
pictograms to provide a global signage system. |
Semiotics
The sign and it's meaning is dependent on context, knowledge, society and culture.
Syntactics
These are formal, unambiguous and succinct. Elements include form, brightness, colour, movement, material, scale, position and shape.
Pragmatics
This is how context contributes to the meaning of a sign. These come in three categories: indicative, imperative and suggestive. Indicative means that it is up to the receiver what they do with the information communicated from a particular sign. Imperative means that the receiver must not do something, even if they want to and vice versa. Suggestive means that it is advised you not do something, but it is not imperative to do so.
Basic Signs
The Square
It is a symbolic object which has a boundaried property, such as the feeling of a floor, ceiling, walls and protection. When the square is tilted to form oblique lines, this indicates intention. For example. traffic signs in the United States.
The Triangle
Symmetrical symbols. This makes them useful for signals, such as road signs. The symbol suggests 'to wait'.
The Circle
It is suggested that we appreciate rounded forms better with the senses rather than with the mind. Feelings are addressed more strongly in terms of a circle, as it's enclosure can be seen as disquieting and claustrophobic.
The Arrow
Suggests movement or direction. It is suggested that we react more to arrows pointing left and right, rather than those pointing up and down, as these suggest a stronger sense of movement.