[OSM-talk] Postmortem analysys

[Nathan Edgars II]

David Murn wrote:
> 
> On Fri, 2011-01-07 at 10:18 -0800, Nathan Edgars II wrote:
>> 
>> Let those broken routers choke on real-world cases where nodes really are
>> in
>> the same place (double-decker bridge that crosses a state line, for
>> example). I'll continue to map correctly.
> 
> Just because you have ways crossing each other at a common point, that
> doesnt mean they all have to have a node at the same point.  When youre
> putting a bridge over a creek, do you simply mark the start/end of the
> bridge, or do you also put a node in the middle of the bridge above the
> water?  Just because a double-decker bridge crosses a border or river,
> doesnt mean that each layer needs to have a node at exactly the same
> point, unless youre either using low-accuracy GPS data, or delibrately
> trying to make the map data harder to interpret by routers.
> 
If the name or ref is different on either side of the state line, then it
needs to be split in the middle.
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