[GraphHopper] Shortest route failed (ferry issue?)

[John Zhao]

Hi Martin,

I have face the same problem.
At last I found it caused by maxspeed=3 in the osm data.
carFlagEncoder use 5 as factor of speed encoding.
every number below 5 will be convert to 0.

Then you will have some edges in the graph with speed=0.

*Best Regards,*
*ZhiQiang ZHAO*

On Thu, Jul 9, 2015 at 5:20 AM, Martin Sauvage <martin.sauvage at gmail.com>
wrote:

> Hello,
>
> I'm facing an issue when routing with shortest path between these 2 GPS
> points:
> 47.194150,-1.676384
> 47.197470,-1.671832
>
> Caused by: java.lang.IllegalStateException: Speed cannot be 0 for
> unblocked edge, use access properties to mark edge blocked! Should only
> occur for shortest path calculation. See #242.
>
> I suspect the shortest route tries to take the ferry (Bac Indret) with no
> defined speed while the fastest route provides:
>
> https://graphhopper.com/maps/?point=47.19415%2C-1.676384&point=47.19747%2C-1.671832&locale=fr-FR&layer=Lyrk
>
> Is it a GH bug or an OSM data issue? Is there any way to fix this crash
> (do not take ferry with shortest route) ?
>
> Thanks,
> Martin
>
>
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