[Tagging] Bridges and layers

[David Earl]

On 27/07/2010 11:51, John Smith wrote:
> On 27 July 2010 20:27, David Earl<david at frankieandshadow.com>  wrote:
>> Why does the data model have to make it so difficult for data consumers in
>> the first place?
>
> So this is another case of the current API limiting things?
>
> I'd love to be able to micromap lanes, not just ways, which might fix
> the problem of parallel ways over the same physical bridge, but I
> can't.

It's not the API. The tagging is scheme is very general indeed, a 
"Turing machine of maps".

You could invent a tagging scheme that would let you model lanes. You 
could, for example, create a way tagged
   highway=lane
or
   lane=1 [2, 3, ...]
or some such - certainly needs some thought - maybe qualified with who 
can use it (access=psv ?), and so on, link all the lanes of a road 
together with a relation you also invent, and to the original road as 
well, which I'm sure we'd all prefer you didn't remove!

That's exactly how the house addressing "Karlsruhe schema" came into being.

You don't need anyone's permission to do this. If you do a good job and 
promote it, it might catch on.

Ideally we'd have tools in the editors to make this easier. A JOSM 
plugin would no doubt help in its adoption.

As someone said at the conference, it's a do-ocracy - just do it!

David