ONR CEN/TS 15209

This document specifies the method and acceptance criteria for the dimensions for surface profile features and patterns for the surface of pedestrian paving units, used to convey information for visually impaired people. It applies to paving units made of concrete, clay and stone where the tactile profiles are monolithic with the unit. It does not specify requirements for profile and dimensions of a single tactile paving profile but proposes ranges within which these dimensions should fall. Default dimensions are given which should be used in the absence of a national requirement. This document proposes methods of measurement of profiles, light reflectance and colour but does not specify requirements for these characteristics. These properties will be decided by the designer taking into account the regulations, codes of practice, and guidance in the place of use of the units. It does not specify material characteristics.