Food related signs are usually fun. I like the concept of pizza delivery the Hawaiian way. Do not feed the hippies sign was on a picnic bench at a surfer beach. One restuarant we patronize had a video camera scanning the surf, the beach, the town sidewalk above... and invited diners to text message their friends at home with the coordinates of the camera and they could be instantly envious.
Now I can understand a sign indicating a minimum clearance or maximum vehicle height, but why sign a maximum clearance? As shown on the right photo, the clearance was actually way less on the left ramp under the overhang.