Interesting, amusing and eye catching signs on the road:
Vulture Warning
Left side of Fairmont Hotel
Right Side of Fairmont Hotel
Think twice before throwing anything !
Bear Parking
Alcohol limit sign
How about speeding
Slow RV
You do not want to be seen littering in WA
Beer Sign
Mild caution about feeding animals
He got a good laugh at this one
Lowes Travels 
Love this! I’m a “sign collector” too, and I keep an album of them on Facebook, but hadn’t thought of making a page for them on our web site. We’ve just started the “retire early, give up all the material things, and travel in an RV” lifestyle, and I blog the funny stuff at http://www.ownlessdomore.us. See you around! -Emily
There are not too many dark voids left in your travel maps.
These are a riot! Love this idea! We were recently on historic Route 66 between Seligman and Kingman, AZ and the old Burma-Shave ad signs still in place were pretty amusing, too! They’re a little bit corny but neat nonetheless. If you’ve never seen them, you might enjoy next time you’re in that neck of the woods. 🙂