Currently, on the fabled Legacy Parkway there are two exits labeled "500 South" and "Parrish Lane." While everybody on the planet knows this means Bountiful and Centerville, what if someone from another world, like Sandy or Provo, or some hapless tourist happens along? How would they know?
Incidentally, in the parallel universe of I-15, destination cities are shown on the exit signs.
Salt Lake City