Is Cast Iron Detectable Warning Really Necessary?

Detectable warning surfaces are tactile tiles or domes installed on the ground to provide a warning to visually impaired individuals about potential hazards, such as edges of train platforms or ramps. Cast iron detectable warning surfaces have been widely used due to their durability and longevity. They provide a distinct auditory and tactile cue that can be easily detected by individuals using canes or relying on their sense of touch to navigate their surroundings.
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