Relic of the past.. or, is it?

I had a circa 1950's era fallout shelter sign in my locker in high school, courtesy of Grandpa and Civil Defense.  I wish I knew what happened to it...

This one is on my way to work.  I pass its faded stickered, bent existence four feet above my head everyday.  Is it a relic of the past?  With the FEMA poster posted just down the street on the bus stop, it might not be.