Speed Limit 45

Pennsylvania road signs continue to amaze me. I am silly, perhaps, but I notice things like:

Road

Narrows

190 ft

and:

Road

Narrows

255 ft

Both of those signs, located in a suburb of Harrisburg, are placed in nice, big, open areas, with nothing else around them for a few feet on either side. My question, for either, is why wouldn't you move the sign, say, five or ten feet... and have a nice, round:

Road

Narrows

250 ft

I mean, I have eyes, I can see the shoulders are going away up ahead a little ways, I probably don't need the sign to tell me so, but IF it's there, why 255ft? Why not move that sign by five feet and make it 250???

So while this was on my mind, occupying my thoughts and worrying me to no end, I was heading up to my neck of the woods - away from the hustle and bustle of the 255 ft road signs, and I saw the Speed Limit 45 sign on the road there, where I've lived for five years almost exactly. And then, I saw the Speed Limit 45 sign, on the road there. And then, I saw the Speed Limit 45 sign, on the road there. And then...

A few days later, I started counting. Between town, and my house, is a rural road, running almost exactly 7 miles through corn fields and farmlands, then continues on past my turnoff. And, in that seven miles, are exactly 21 Speed Limit 45 signs. (There's another one about 255 feet past the turnoff to my house, but I didn't count that.)

Last night, returning home, I attempted to snap a few shots, from a moving car, of these signs, and one... I went past before I could snap, but the other 20 are here - even if you cannot see most of them.

I am just not sure that we need a speed limit sign every third of a mile. I am thinking that perhaps someone, somewhere is making money.

I think what they should do next is put signs up about every 255 ft that says "Photography while driving is prohibited". Then they'll get me for DWP (Driving while photographing).