It's extremely offensive to me that the people are so powerless to fix things like this without sneaking it (like that guy that added a much-needed highway sign in the LA area before it was caught over a year later).
http://www.slate.com/blogs/the_eye/2015/02/11/guerrilla_publ...
It's worth pointing out (because, for some reason, the coverage of this dude and his I-5 sign never emphasizes this) that when the sign was 'caught', Caltrans examined it, found it appropriate and to-spec, and left it up.