This sign has been in place for at least three months now.
It’s at the San Marco exit, and presumably is to inform everyone that things are still open even though they’re tearing up the roads in the area. We all know what it really means, but it hasn’t occurred to anyone responsible for the sign and/or construction in the area to correct this after months of having this huge fail seen by however many thousands upon thousands of commuters (and tourists!) traveling along the route on a daily basis? It’s also a bit troubling that someone had to program this, and that same someone is likely working on the crew in some capacity. Hopefully it doesn’t involve safety-related calculations of any sort that they have to write down and give to other people.