On the internet we've come across information such as the following which is both incorrect and unhelpful. We stongly urge you to stick to UK Gov. Official Publications for correct information sources if you plan to qoute specific legislation.
DDA.
The term of "signals ADA" came in the use joint in the architectural, the industries of the construction and signage with advent of the British UK inabilities act, or ADA. Unhappily, it is a term understood badly. The majority of peoples think that it is synonymous with Braille signals. Certainly, the raised signals with Braille and characters are manifestation most visible of the law that requires the access to the constructed environment, but the standards of the signal in guidelines of the accessibility of the ADA, or ADAAG, require much more of that only Braille and characters raised in some signals.
Even if, because the rules that require Braille in certain marks, the department of systems of indication is considered as the utility of persons that is blind and with optical infirmity, certain of the directives of marks profit the persons with impairments mobility or impairments hearing. Moreover, somebody can say generally that easily they read also well thinking outside systems of systems of indication of are determined profit in the persons that are hearing impaired, have the problems speaking, have the cognitive disabilities or the psychiatric terms that them force in order to they avoid in the foreigners.
In general it is common, almost each sign that has an architectural sign must satisfy to one or other of the ADA directives. In other words, as a sign a permanent space identifies or space of a facility, including terminations, leads or informs concerning functional spaces of the facility, or identifies, leads, or informs concerning accessible properties of the facility, it must satisfy. The signs for publicity and marketing aims, the temporary signs, the company emblems and the names are examples of signs or sections signs which do not have satisfy.
Linden Signs