* The route whose exit numbers are used for the concurrent segment
* When the concurrency ends, the route whose path does '''not''' get signed as a numbered exit.
The other route number(s) can be entered as alternate names. If alternate names are entered, be sure not introduce any alternate name discontinuities which may trigger the [[Detour Prevention Mechanisms|big detour prevention mechanism]].
'''Highways through cities/towns -''' In situations where a highway passes through a town, the road in those areas is typically named something other than the numbered route. In these situations the road should be named based on the following conditions: