2012 Florida Accessibility Code for Building Construction Pocket Guide

406.8 Detectable Warnings. Curb ramps subject to Department of Transportation regulation 49 CFR 37.21 shall have a detectable warning complying with 705. The detectable warning shall extend the full width of the curb ramp (exclusive of flared sides) and shall extend either the full depth of the curb ramp or 24 inches (610 mm) deep minimum measured from the back of the curb on the ramp surface.