I have had a number of folks visiting my site looking for information about the maps of the High Threat Urban Areas (HTUA) that are an integral part of the TSA Rail Transportation Security Rule (49 CFR 1580). I did a quick check and can see why; the link to the TSA HTUA maps is dead again. This is a recurring problem for TSA.
This is a regulatory issue since these maps are the only way that facilities have of checking to see if they are covered by provisions of §1580. Well, that isn’t entirely true, they can call the TSA Freedom Center (703-563-3240 or 1-877-456-8722).