Hey Thadood,
MA "supposedly" has around 25 "TIS" or "SAFE" stations "on air". I am not not sure how old that list or how accurate it is either.
I vaguely recall cruising around the state and seeing signs still up for stations that weren't on air ( for whatever reasons).
Not sure if some of these were "on demand" , ie if no big traffic jam or other emergency = off air.
TIS were fun to Dx .You KNOW conditions were good if you could hear them.
NQC