[Routing] generalized routing format

[flo Detig]

Marcus Wolschon wrote:
> I think it would be better to discuss basic
> storage and indexes first before going on
> about special optimizations.
>   
I agree with that.
Is there some lowest common denominator for a generalized routing format?
Something everyone could use / need who works on routing osm data?
There is a nice visual description by Michael Josenhans in the wiki
http://wiki.openstreetmap.org/index.php/OSM_Routing_Data_Layer
As a first step merge the intermediate nodes of degree two?
Is this simple enough to fit everyone?
Does it make sense to add this to the database (maybe in pgrouting 
compatible format)?
Or just some kind of transformation script that outputs osm-xml again?
Anyone interested?

flo detig