J.O.E. stands for "Just Off Exit". They're intended to be extremely easy to find with very good hints. This one is no exeption.
I've found a few of these in my travels so I figured that I would reciprocate and place one in my neck of the woods.
ZXU whfg gb gur yrsg bs gur svefg TE cbfg. Fbhgu fvqr bs gur ebnq.