[OSRM-talk] Ferries dot gone?

Patrick Niklaus patrick.niklaus at student.kit.edu
Thu Aug 11 16:58:08 UTC 2016


Hey Jürgen,

I think you are hitting a change in behavior that occurred between the
4.9 and 5.0 versions. It is not possible to start on ferries anymore.
That means if a route over a ferry is not the fastest route, it will
not get taken. Combine that with the fact that most ferries don't have
a `duration` tag (hence defaulting to a speed of 5 km/h), you will
only see them used if there is absolutely no way.

However in the case above, I think you are hitting a different
problem: The island is not reachable because the paths on the ferry
are not accessible by cars:

http://map.project-osrm.org/?z=18&center=38.013485%2C12.512650&loc=38.013535%2C12.513288&loc=38.012737%2C12.511910&hl=en&alt=0

http://map.project-osrm.org/?z=18&center=37.933299%2C12.325405&loc=37.933282%2C12.325196&loc=37.933227%2C12.325501&hl=en&alt=0

I'm not sure if these ferries are generally accessible by car, but the
tagging would need to be fixed for that.

Best,
Patrick

On Thu, Aug 11, 2016 at 3:42 PM, Jürgen Barthel <osrm at checkin.com> wrote:
> Hi, we had some trouble lately with OSRM, where both
> openstreetmap.org/directions/ and http://map.project-osrm.org/ where our
> mapping expert found that the demo-server was to be fixed.
>
> Now on openstreetmap.org/directions/ a lot of routes don't work any more,
> which I have seen before I opened error notes on OSM, i.e.
> http://www.openstreetmap.org/directions?engine=osrm_car&route=37.9313%2C12.3274%3B38.1765%2C13.0917
> (Saint Malo-Cherbourg to Dorchester,
> http://www.openstreetmap.org/note/617142). See also
> http://www.openstreetmap.org/note/599194 where it seems the mistake got
> solved but OSRM doesn't compute it.
>
> Something wrong on OSRM side? I tried several (20+) ferries (Scotland,
> Channel Islands, Mediterranean, Baltic Sea) but could not find a single
> working any more.
>
> Thanks for feedback - Juergen
>
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