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@GreenandBlack the city of são paulo in brazil passed a Clean City Law in 2006, banning public advertising from building facades, busses, taxis, bus stop posters, etc. Here's an article from 2016 about it,
99% InvisibleClean City Law: Secrets of São Paulo Uncovered by Outdoor Advertising Ban - 99% InvisibleWhen São Paulo introduced its Clean City Law (Lei Cidade Limpa) a decade ago, over 15,000 marketing billboards were taken down. An additional 300,000 ostentatious business signs, hanging over streets or painted in large letters on facades, were also subject to a hefty fine if they were not removed promptly. Bus, taxi, and poster advertisements had