State highway naming
When a state highway has been divided into two one-way segments per the guidelines, add the trailing N/S/E/W cardinal direction to the name (ex: N-370 E), regardless if the name is used as the primary name or an alternate name. If a local name also exists, the cardinal can be omitted from the local name at AM/SM discretion (ex: When N-370 is signed locally as Harlan Dr).
State highways are to be named N-### [a][b]
(TTS pronunciation "Nebraska ###")
State Links are to be named L-##X [c]
(TTS pronunciation "Nebraska Link ##X")
State Spurs are to be named S-##X [d]
(TTS pronunciation "Nebraska Spur ##X")
State Recreation Roads are to be named R-##X [e]
(TTS pronunciation "Nebraska Recreation Road ##X")
^a State highways never share the same number as any U.S. or Interstate highway that runs through the state.
^b The exception to this format is Nebraska Highway 25A (N-25A) which acts as a spur but is not signed as such.
^c A Link is a highway that connects two major highways.
^d A Spur is a highway that connects a major highway to a city or town where no other highway exists.
^e Recreation Roads are the roads contained within a State Park and are almost never signed but do appear in NDOR and FC maps.