I got an answer back from Adam at Allstays.
Hi Gordon, that is a long term goal I have had. It just is hard to
find good info as even the states often don't have much of a clue.
Just listing tunnels might be the closest I can get because states
might just say not in any tunnels or it could vary for a certain one
but not be signed.
I do have restricted routes, hazmat, etc in the extra resources, if
you did not know. It is buried a bit off the MORE button or top center
grey bar on iPad. Extra Resources, then each state has a section in
My online Pro will probably have it first as I add stuff there and
then see if it works in the app or can be done. Mapping tunnels or
long routes doesn't work real well with just a pin, but I do it with
the road inclines already.
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