The design communicates necessary information effectively to the user, regardless of ambient conditions or the user’s sensory abilities.
Guidelines:
-Use different modes (pictorial, verbal, tactile) for redundant presentation of essential information.
-Maximize “legibility” of essential information. Differentiate elements in ways that can be described (i.e., make it easy to give instructions or directions).
-Provide compatibility with a variety of techniques or devices used by people with sensory limitations (Story et al., 1998, p.43).
In different modes (written, symbolic, tactile, verbal etc) the building should provide all essential information for achieving the effective communication independent from the users’ sensory abilities. The information should be presented with sufficient contrast to surrounding conditions for making it distinguishable from its context and decipherable in all its different modes of presentation (MOPD, 2001, p.22).
Two different traffic lamps, one is from Atatürk Bulvarı and the other one is from Gazi Mustafa Kemal Bulvarı (Ankara)
The first example has audial option for the disabled users but the second lamp has no organization like that. It serves only visual option which is not suitable for 'perceptible information principle'.
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