[piva00]

I worked in São Paulo before and after this law was enacted. The difference was honestly massive, there used to be billboards plastered all over the city: across any walls or free space around major avenues (imagine the whole perimeter of Congonhas airport with Av. dos Bandeirantes covered by giant billboards floating over the walls), on the visible sides of tall buildings towards major streets, there were billboards stacked on top of others around avenues overpassing other roads (seeing 2 or 3-stack wasn't uncommon). With technological advances then came the massive displays, blinking with lights, completely littering your sight with moving images, flashes, etc.

After those were torn down, and signs around commercial spaces were restricted to a maximum allowed diagonal, it felt like your eyes had at least some rest, even though the city is still an eye sore for most of it, you didn't feel eye fatigued just by driving around some 30 minutes. It's hard to describe the difference, a constant, loud background noise seemed to disappear, at least for me.

[Luctct]

They were dangerous too. Huge and bright moving ads on the side of high speed highways. I don't know if any accident was ever caused by them, but they were really begging for it.