Why are detectable warnings a requirement for curb ramps?
The purpose of a detectable warning is to warn a person with vision impairments that they are entering a hazardous vehicular area not to notify them that they are about to walk on a curb ramp.
Then there is this baffling FAQ from TDLR.
Q9: Is a detectable warning required when a sloped walkway leads to a street?
A: No. For purposes of TAS, the only locations required to have detectable warnings are curb ramps and platform edges in transportation facilities. See TAS 4.7.4. and TAS 10.3.1. Other designs for surfaces that are detectable underfoot may also be submitted for consideration. See TM 99-15.
So even if the “sloped walkway” leads directly into oncoming traffic, detectable warnings are not required.
Wouldn’t it make more sense to require detectable warnings where a pedestrian route enters a hazardous vehicular way rather than have them as a requirement for curb ramps?
Comments would be appreciated.