In America especally in the larger cities you will see this all over the place. It's quite funny to look at. But I've always been wondering what does it mean? Here are some answers on the sites below.
https://www.snopes.com/fact-check/the-s ... -sneakers/
https://www.jacksonvilleprogress.com/ne ... aa5-8465-9
Here are some more weird things about cities
https://www.theguardian.com/cities/2016 ... kyscrapers
https://www.thetravel.com/20-of-the-wei ... rk-subway/
http://mentalfloss.com/article/65656/6- ... ty-streets