The tag implication #52042 a-frame_sign -> sandwich_board is pending approval.
Reason: Currently there are two tags with some overlap:
1) a-frame_sign
and
2) sandwich_board
a-frame_sign wiki says: "A-frame sign (also known as sandwich boards) is a two-faced sign. Each face of the sign joins at the top allowing for each face to extend outwards from the top giving stability to the sign. signs of this type are usually designed to be foldable. Some a-frame signs are designed to be wearable. ...
...
wet_floor_sign - May not be exclusively a-frame signs, but easily the most common design. ..."
I would say the worn/carried versions are not A-frame, but more like an upsidedown-U (almost a n-shape).
Two steps i can think of
1) With the wiki, maybe change start to "A-frame sign (a type of sandwich board)..."
2) IMPLY a-frame_sign -> sandwich_board
Wikipedia article at https://en.wikipedia.org/wiki/Sandwich_board has:
"... There are generally two types of sandwich boards.
Carried version
...
A-board
Another is called "A-board" which is kept next to the stores, ..."