I grew up in Poland, which experienced explosive capitalism during the 90s and with it a surge of banners, billboards and ads.
Most of them done on the cheap and in bad taste - optimised to draw attention.
Fortunately at least in some cities regulations followed and most of that clutter was removed during the first years of the XXI century.
Only bad second order effect I experienced are people employed to lure you into some places like strip clubs etc.
My take is that banners should be allowed as long as there's a style guide issued by the city which they would have to follow.
Italy is doing great in this regard - the worst I saw there were outdoor photo prints of menus which aren't nearly as bad as large posters in safety-vest yellow I saw back home.
Most of them done on the cheap and in bad taste - optimised to draw attention.
Fortunately at least in some cities regulations followed and most of that clutter was removed during the first years of the XXI century.
Only bad second order effect I experienced are people employed to lure you into some places like strip clubs etc.
My take is that banners should be allowed as long as there's a style guide issued by the city which they would have to follow.
Italy is doing great in this regard - the worst I saw there were outdoor photo prints of menus which aren't nearly as bad as large posters in safety-vest yellow I saw back home.