Look for a personal conversation and ask him how he would have done it, maybe he has a good idea. Otherwise, he might notice himself that this is the only way.
I have decided not to take the guy too seriously, otherwise he might feel flattered..
What does the final solution look like regarding the blocking(s)?
No parking signs have been put up for the period Mon. - Fri. from 7 am to 5 pm. They were firmly attached, so I won’t have to twist and turn anything there.
As for the full closures, he said that would be disproportionate. It is not even clearly determined when they will be needed, and it’s rather individual or a few consecutive days.