[Talk-us] County road network relations

[Nathan Edgars II]

On 4/10/2011 8:02 PM, Alan Mintz wrote:
> At 2011-04-10 16:28, Nathan Edgars II wrote:
>> How does this work with routes that cross county lines? California has
>> a statewide numbering system, with the letter roughly representing the
>> part of the state.
>
> Yup - that is problematic. I think, when I marked Orange County S18 last
> year, I didn't see any other county road tagging to go by.
> http://www.cahighways.org/county.html shows that there are some
> occurrences of this. I apparently expected to break them at the county
> lines, I guess, so as to agree with signage. That is, Orange County S99
> would be a different route than San Diego S99.
> network="US:CA:Orange;US:CA:San Diego" on the relation seems workable.

They're really not different routes. They could be split at county 
lines, like U.S. Highways are split at state lines, but the network 
should be the same.
>
> It's almost like they defined super-groups of counties identified by
> those letters. I'll have to crunch that table to see if that's the case
> so we could have network=US:CA:S + ref="CR S18". Maybe add an
> is_in:county tag to the individual segments to avoid losing that
> important info.

How about simply network=US:CA:CR?