This 1998 photograph depicted a publicly-accessible staircase, which had been designed with consideration for those that were visually-impaired. Note that the underside aspect of this structure had been cordoned off by the inclusion of a fountain-pool, and seating area, in order to prevent the visually-impaired from walking beneath the low-hanging staircase, thereby, avoiding head or bodily injuries. In this way, normally unused, though potentially dangerous walk-through space, was turned into an attractive, and safe amenity. Note also, that the handrail was 'double-height' on both its sides, as well as provided an additional offset-located center handrail stanchion, thereby, providing safe use by short and tall people. The relatively narrow horizontal spacing between handrails on one side, allowed users to hold onto both handrails at the same time, thereby, achieving greater stability. See PHIL# 9047, and 9048 for additional views of this structure.
CDC/ Richard Duncan, MRP, Sr. Proj. Mngr, North Carolina State University, The Center for Universal Design
November 3, 2012