[Talk-us] braided streets

[SteveC]

On 8 Apr 2008, at 10:13, Dave Hansen wrote:
> On Mon, 2008-04-07 at 23:55 -0700, Alan Millar wrote:
>>> The only thing I might do differently is not have the node shared
>>> between the railway and the streets.  That's what I did for the  
>>> TIGER
>>> upload: created two nodes at the same location.  One for the  
>>> street, one
>>> for the railway.
>>
>> Oh, that was on purpose?  Oops.  JOSM validator complains about  
>> them, so
>> I've been merging them where I find them.
>
> Bah.  My version doesn't do that. :)
>
> http://dev.openstreetmap.org/~daveh/josm/
>
> Please don't merge them any more.  A common node really means that  
> they
> share a point in space and that the point is navigable.  If you can  
> turn
> a train on to the street, then it's OK to share the node. :)


to sanity check - what I do at train crossings is that they share a  
node, with railway:crossing on the node or whatever it is, but one way  
is railway:rail and the other is highway:unclassified or whatever, and  
so any sane routing app wont route one type on to the other

>
>
>> To me, it makes sense to combine them.  If a car will have to drive  
>> over
>> the tracks, then they should share the same node, it seems.
>>
>> I haven't really thought it through.  How does it help to have them  
>> be
>> separate nodes?
>
> I'm not sure it helps with much.  It's just what I was asked to do  
> long
> ago. :)
>
> -- Dave
>
>
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Best

Steve