[OSM-talk] Route relations on cycle map

[Mike Collinson]

At 03:19 PM 30/10/2007, Andy Allan wrote:
>> > (c) uses uk_ncn rather than ncn, just to avoid possible name space clashes.
>>
>> This is an interesting one. It kind of depends what you are trying to
>> do with it. You can follow the same plan that OSM uses for everything
>> else in implying what ncn means depending on what country you're in,
>> if that works.
>> ncn was chosen because it is already being used to tag cycle routes
>> outside of the UK. There's some in the netherlands, oslo, stockholm
>> and probably elsewhere.
>>
>> I've actually added uk_ncn as an alias to ncn in the renderer, so
>> either will work just fine. There are aliases for uk_rcn and uk_lcn
>> too.
>
>I might well remove these aliases - I don't think there's any point to
>having different tags for different countries. So far we've got 5
>countries all working fine with ncn . If we have uk_ncn as an alias,
>it'll just confuse people, since there's no definitive list of what
>works.
>
>We've been using ncn for a while now, it works, it's exceptionally
>successful and is in use around the planet. 

Yes, in supporting observation the national, regional local scheme works rather like highway= internationally ... there may not be an precise national analogue or indeed any formal classification at all but it is obvious what they mean.  

Mike
Stockholm