Hi,

we're currently trying to improve the time estimates for ferry routes in
GraphHopper. See https://github.com/graphhopper/graphhopper/pull/519

But there are several unrealistic times detected for a world wide
import: https://gist.github.com/karussell/da39dcbea2b8b9cc9e06

Now my question is: is the duration just the time the ship takes from A
to B or is an average waiting time included? We guess the waiting time
is not included. Can we update the wiki, saying that the waiting time is
not included?

Also we need to say there, that if the ferry is tagged as a relation,
then the duration tag has to be set as part of the relation, not of the
way. Because if two ferry relations share the same way the durations
'collides'.

Additionally tagging ferries as way is simpler but we think tagging them
as relations is better. Especially for extremely long routes the OSM
ways should be avoided, but that is probably just a different opinion.
See the GraphHopper issue because of this wink
https://github.com/graphhopper/graphhopper/issues/435

Regards,
Peter
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