The anonymous Freewayblogger is coming back to Los Angeles on Thursday while on her West Coast tour that begins today in San Diego and ends in Portland on the 22nd.

The Freewayblogger claims to have hung over 4,000 signs against the war on freeways across the California and the western U.S. "When you put a sign up next to a freeway, people will read it until somebody takes it down," she writes on her blog.

How much time does it take to put one of these up? Not long. The sign in the above photo "took less than ten minutes to make and five minutes to post with a material cost of about a nickel." There is even an instruction manual on how to do it.