So, I saw a sign by the road when I was in Chicago yesterday that made me tilt my head a little.
Now, correct me if I'm wrong on the meanings of these signs.
Pedestrian crossing.
Deer crossing.
Tractor crossing.
Horse and buggy crossing.
So then I saw this sign:
The only thing I can deduct from the trend we've seen in the above pictures is that this sign actually denotes that there is a seesaw crossing nearby.
Or, as Bry points out, it may be a catapult warning if someone of large mass rapidly sits down on one end while someone of significantly smaller mass is seated at the other end.
Also, signs that warn you to beware of falling ice? Actually make me a little nervous.
Also also, I have returned from the land of hotels that want me to give them $6.95 for every 15 minutes of internet usage.