This is a bit related to my earlier post on various configurations of "no unauthorized personnel" signs, with this particular example being a rare case of showing only a hand without any kind of slashed circle symbol. We have simply the silhouette of a hand with the fingers stretched out, with the implication that the hand has been thrust towards the viewer1 to bar entrance.
The textual components are quite straightforward. We have the name/logo of SKANSKA at the top left corner, and then an explanation supporting and expanding the visual part, which translates to something like:
Stop!
Entering the construction zone is forbidden without entrance credentials. You can get credentials from the construction zone office.
The sign vessel is simply a laminated A4, probably produced by the company itself. It has been stapled to the wooden construction wall, and there doesn't seem to be any puncture marks from previous staples, suggesting possible one time use. We can only guess if the somewhat unusual symbol is part of SKANSKA's internal collection of symbols and logos, but the rarity of its style suggests that this is probably not just the first image that the summer intern found from Google image search.
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In this implied configuration, the implied stopper is using their right hand. I wonder if there is any difference in the effectiveness of such signs based on the left or right handedness of the stopper? ↩