[mkgmap-dev] Routing issue at staring oneway road

Thu Apr 7 21:18:33 BST 2011

On Thu, 7 Apr 2011, Johann Gail wrote:

> @Markus:
> Are there any signs, that the destination road is a oneway?

The destination i want to get routed to is about at the point
http://www.openstreetmap.org/browse/node/1079735170

So it is not a oneway.

I was just right now by foot out at the place with the Garmin Dakota to 
reproduce it in a better way. The results are a bit strange. When iam at 
Neugasse and let it calc the way to the destination, when i can not 
reproduce the bad routing up the Kreuzstraße -> Rudolfstraße -> 
Rosenstraße.

The bad routing happens when iam coming from more far out. The original 
route was over Rudolfstraße -> Rosenstraße. But when i drive down the 
Neugasse i get a rerouting and that is heading over Kreuzstraße -> 
Rudolfstraße -> Rosenstraße.

So its looking now more like someing from the Dakota routing recalc and 
not so much from the mapgeneration itself. Is there any knowlege how a new 
calculated routing is different from a updating recalc of a route on that 
Garmin devices? Maybe the access=destination tag at that part of the city 
could be part of that routing troubles too ...

Markus