Re: Do you regulate public sidewalk construction?
The "regulation" is actually by the Federal DOJ and at public walkways, the detectable warnings are now required.
At interior of property lines of the building site, the ramp surfaces mut meet the requirement for color contrast and typically, grooves at 2" to 4" o.c. perpendicular to the path of travel is acceptable.
This is what they train the blind with the cane to "look for" to detect the warning surfaces.
If you are on a site and can transmit this info to the GC or architect, before they screw up the public walks, to me it does not matter who is "in charge", take the opportunity to get it right.