Welcome to the South, where we have terrible road signs!
The second sign is referring to the speed bump right ahead, but isn't standard in the slightest. Seems almost no-one's looked at the MUTCD and seen what the
official sign looks like, so they just write their own variant. For example, here in Huntsville, the city posts
"Speed Humps Ahead" on their signs, even though they usually try to stick to the MUTCD as much as possible. My personal favorite though has to be "Slow Hump Ahead", which I spotted in Quincy, FL last year:
Slow Hump Ahead by
freebrickproductions, on Flickr
Slow Hump Ahead by
freebrickproductions, on Flickr
Though here's a "Slow Bump" sign found in Casa, AR:
I have to wonder if that's what the workers in the sign shop were thinking of doing with their wives that night...
Also, going back to the second link in your post, gotta love how they mounted the speed limit sign underneath the warning sign like that...
Is the sign supposed to be the advisory speed, or is the speed limit along that road actually 10 MPH? It's just too confusing, and was only done so they could save money on one sign post!
ToledoRailfan wrote:
Its job is to motivate drivers to drive safely. I wonder if there were several instances there of drivers not driving safely.
Ain't official either. The closest sign to that was the "Slow Children at Play" signs that wound up being removed years ago from the MUTCD due to the fact that the FHWA found that they didn't really affect driver behavior all that much.