[mkgmap-dev] Nuvi routing performance

Sat Sep 5 16:49:18 BST 2009

Mapsource routing is very different from the routing on the device. I  
use only a Vista Hcx and it can route most of the times across  
multiple tiles. Mapsource typically gives up on more than 3 tiles.
have built a test with only some motorways and primary where only 2-3  
routes are possible. But Mapsource will still fail. All segments are  
routable if some via points are inserted.
On a commercial Garmin map it is possible to route across huge  
distance and many tiles. It's very slow but it works.
There is still some secret in the Garmin maps about multi tile routing

On 5 Sep 2009, at 3:44 , Mark Burton wrote:

>
> Playing with my shiny new Nuvi 255, I notice that it can route across
> an OSM map of the UK pretty well. It can find long routes
> reasonably quickly. In comparison, mapsource 6.13.6 often fails to
> determine a route at all and when it does it is rather slow about it.
>
> Do other people see good routing performance on the more recent Nuvis?
>
> Cheers,
>
> Mark
>
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