[Talk-ca] Routing issue / Probleme de routage

[Adam Dunn]

If you set the origin to be Gaspé, and a destination of Cornwall, then
MapQuest will take the long way through Miramichi.
If you set the destination to Dorval, then MapQuest will go through Rimouski.
The difference in destination between Cornwall and Dorval is
negligible, and both are far away from the incorrect routing. Perhaps
this has to do with incorrect road classification or speed limits?
Perhaps MapQuest has pre-calculated a long-distance routing
matrix/tree, and that routing matrix/tree is using old data, which is
causing the strange errors here?
I cannot recreate the routing error in http://routingdemo.geofabrik.de/

Adam

2011/4/13 Bégin, Daniel <Daniel.Begin at rncan-nrcan.gc.ca>:
> Bonjour Nakor,
>
> Mon hypothèse première est qu'il doit y avoir un bris dans la continuité du réseau routier entre Rivière-du-Loup et Rimouski.
>
> Cependant, le bris doit cependant apparaître sur tout les segments de la région si aucun chemin alternatif parallèle à la route 132 est sélectionné. Ce qui me surprendrait!
>
> Daniel
>
>
>
> -----Original Message-----
> From: Nakor [mailto:nakor.osm at gmail.com]
> Sent: April 13, 2011 15:51
> To: talk-ca at openstreetmap.org
> Subject: [Talk-ca] Routing issue / Probleme de routage
>
>
>    Bonjour,
>
> Quelqu'un aurait-il une idee de la raison de ce routage particulier :
> http://open.mapquest.com/link/4-J9uff4Tn
> Si on ajoute Rimouski  come point intermediaire le chemin est bien plus direct
>
> Does anyone know why this strange routing happens:
> http://open.mapquest.com/link/4-J9uff4Tn
> If I add Rimouski as a waypoint everything is fine.
>
> Merci,
>
> N.
>
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