[Talk-us] State Route relations

Paul Johnson baloo at ursamundi.org
Sat Oct 16 23:14:40 BST 2010

On 10/16/2010 06:24 AM, Richard Welty wrote:
> On 10/16/10 7:12 AM, Mike N. wrote:
>>> One thing I /haven't/ seen addressed yet is whether single relations are
>>> preferred, or one relation for each way with a super-relation.
>>> Currently both are in use, but I think it would be a lot easier for
>>> future code if we pick one and move towards it from now on.
>>   The current preferred convention is one relation per state, with a
>> super-relation for all.  Some people are converting existing road
>> route relations, but it takes time.     The reason is to minimize
>> editing conflicts across long distances where it is likely that 2 or
>> more people will be splitting a roadway to add attributes at the same
>> time.
> for motorways a lot of people are using two per state, one in each
> direction. there
> hasn't really been a concensus on that vs one relation with roles.
> the other reason for breaking at state lines is that for long US
> highways and
> Interstates, the number of nodes in the ways becomes unreasonably large
> and editing them becomes an iffy proposition.

Isn't there usually a parent relation in this case?

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