[OSRM-talk] Newbie question : alternative modes

[Ricardo Pereira]

Thanks.
The merge with osmosis would probably be required as the set of seaways to
be used resulted from a custom set of paths specific to the application
(not based on OSM rivers).
Usage of ferry would mos probably not be desired. I would like car profile
to work as normal, including the possibility to use OSM provided ferry
tagged routes, and would expect "my seaways" to only be used with a
specific profile (say "boat") and not even be merged with road.
Assuming that I would get a merge with a new set of routes tagged with a
"route=boat", what kind of support would OSRM give to support adding a new
mode/profile that could only use such routes ?

Thanks

On Tue, 13 Jun 2017 at 10:44 Daniel Patterson <daniel at mapbox.com> wrote:

> Hi Ricardo,
>
>   There is currently no built-in method for this.  OSRM supports ferry
> routes, but only when they're drawn explicitly in OpenStreetMap, and
> tagged with route=ferry.
>
>   To do this correctly, you would probably need to draw your own ways
> down the rivers that you want to support, and connect those to the
> rest of the network.  It may or may not be OK to add this data to OSM
> itself, I suspect you will need to maintain your own data, and merge
> it into an OSM extract (using a tool like osmosis).  It might be
> difficult to keep the connectivity correct if you update your base
> map.
>
>   I don't think using the outlines of the river polygons for routing
> will be practical - I can imagine a lot of cases where the shape might
> be very bad for routing, we would route you along the edge of the
> river, rather than down the center.  It might get very strange when
> rivers hit lakes.  I also don't know if all the necessary roads/paths
> would be properly connected to the edges of the river at the points
> you want.
>
>   TL;DR - there's no easy way to do it.
>
> daniel
>
> > On Jun 13, 2017, at 08:41, Ricardo Pereira <ricardo.pereira at gmail.com>
> wrote:
> >
> > Good morning.
> > I'm new to OSRM and would be thankful if someone could direct me to the
> right approach/documentation to achieve the following:
> >
> > On top of the normal OSM data supporting "road" traffic, I'd like to
> also include waterway graphs, that would allow OSRM to also calculate
> routes for another type of vehicle (e.g. boat).
> > I would expect to provide a "waterway" graph with the same type of
> variables as a road, just as maximum speed, etc, but would expected that it
> was reserved vehicles of the "boat" type, so that those ways would be used
> only with the right profile.
> >
> > Please notice also, that my preference would be to add the rivers to
> normal road data, not have a separate instance "pretending rivers to be
> roads".
> >
> > Thanks in advance,
> > Ricardo
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