A4.29 TACTILE WARNINGS.
A4.29.2 TACTILE WARNINGS ON WALKING SURFACES.
(Reserved).
A4.29.3 TACTILE WARNINGS ON DOORS TO HAZARDOUS AREAS.
Tactile signals for hand reception are useful if it is certain that the signals will be touched.
A4.29.6 TACTILE WARNINGS AT REFLECTING POOLS.
(Reserved).
A4.29.7 STANDARDIZATION.
Too many tactile warnings or lack of standardization weakens their usefulness. Tactile signals can also be visual signals to guide dogs, since dogs can be trained to respond to a large variety of visual cues.
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