Detectable warnings provide a distinctive surface of truncated domes detectable by cane or underfoot to alert people with vision impairments of the transition to vehicular ways. These warnings compensate for the sloped surfaces of curb ramps that remove a tactile cue provided by curb faces. It is not the intent of this specification to relieve the supplier from the final responsibility to provide an appropriate product for the intended function@ nor is it intended to specify all the design details. The objective is to provide a sufficiently detailed specification such that the function establishes a standard geometry of the detectable warning surface.
M 333-2015 history
2016M 333-2016 Standard Specification for Detectable Warning Surfaces
2015M 333-2015 Standard Specification for Detectable Warning Surfaces
2003M 333-2003 Standardization mandate to CEN concerning flammability of mattresses and bed bases for medical purposes