San Francisco is taking steps to combat an outdoor “problem” in the city:

How do you know where to tread lightly if you visit one of the country’s most progressive cities? That’s where Vox comes in handy:

Maybe there’s a special frequency on the police scanner where they get that info:

Ha! We can’t wait.

Read more: http://twitchy.com/2015/10/07/necessity-in-a-progressive-run-city-vox-maps-out-san-francisco-sidewalk-obstacles/