[OSM-dev] Routing with OSM Data

[Joerg Ostertag]

...

> My answer to this is fairly simple: so far the effort involved in
> removing segments has clearly outweighed any benefits to be gained. I
> say clearly because so far people have only ever talked about it.
>   TBH planet isn't *that* big, and doesn't take *that* long to process
> given how much information it contains. I'm sure this will become more
> of a need as time passes.
>
>
>   It does not take that long to process because you use database (MySQL...)
> If you do not use database, just use plannet.osm text file and you try to
> clip a region (for example london city), you will know how long it will
> take.

Have you already had a look at the postgis database used for rendering with 
mapnik. This might give you a better startingpoint for your experiments with 
routing. 
If you then would do the coding in C or C++ we might be able to use this 
routing code for GpsDrive. 

-

Joerg