While driving west on I-70 and north on I-29, I saw road signs and exit signs with single letters or combination of letters, such as J or HH. I thought it might be a state road system, but when I exited one to get gas, there was no additional signage for the letter. I’ve hadn’t seen the like in any other state. I found it simultaneously amusing and confusing.
Only Forward 
Aggie
I think these are state route signs…they use letters or combinations of letters instead of numbers…Like Rte 518 in Hopewell might be Rte P.
Anyway. luv your dialogue…keep ’em comin’
Bob
Yeah, that’s what I thought, but once you are on the road, it doesn’t have any more signs showing it’s Route J or whatever. At least in NJ, there are signs that continue to identify the route. And thanks for your comments, it’s helps keep me writing.